Origin of the orbicularis oculi

Inferior oblique muscle. Inferior oblique is a thin, narrow muscle of the eye. It is one of the 6 extraocular muscles, also referred to as the extrinsic muscles of the orbit. Like the other eye muscles, inferior oblique is named by its position within the orbit, relative to the eyeball. It occupies the inferior aspect of the orbit, encircling ...

Origin of the orbicularis oculi. orb (n.) mid-15c., "sphere, globe, something spherical or circular, orbit of a heavenly body," from Old French orbe "orb, globe" (13c.) and directly from Latin orbem (nominative orbis) "circle, disk, ring, hoop, orbit," probably related to orbita "wheel track, rut," a word of unknown and much-disputed origin. Watkins suggests a connection with ...

Calcium homeostasis of orbicularis oculi-derived myotubes compared with quadriceps- and EOM-derived myotubes. (A) Representative traces showing changes in ... Curves were generated using the sigmoidal fit function of the Origin software and show the changes in peak calcium, expressed as [Ca 2+] in nM. Each point represents the mean (±SEM) of ...

Origin: The origin of the frontalis muscle is the galea aponeurotica, which is a fibrous layer that covers the top of the cranium and extends from the forehead to the back base of the skull. Insertion: It inserts as right and left bellies from the skin of the eyebrow, with fibers extending down to interdigitate with orbicularis oculi and procerus.orbicularis oculi. name a muscle that closes the eye. one:rotates and extends the neck; both flex the neck. what is the action of the sternocledimastoid. temporalis. what muscle is the synergist with the masseter. Study with Quizlet and memorize flashcards containing terms like Zygomatic arch, Abducts corner of mouth, Sphincter muscles and more.Origin: medial part of the superciliary arch (frontal bone). Insertion: muscle penetrates the frontalis and orbicularis oculi muscles and inserts into the skin over the middle of the eyebrow. Action: pulls the skin of the eyebrow downward and medially, and produces vertical wrinkles of the forehead.Finding out information about family histories is growing in popularity with each passing year. In addition to wanting to know more about a person’s backgrounds, obtaining information about name origins is also of interest. Follow these gui...Muscle Origin Insertion Action Muscle of Facial Expression Epicranius Frontal Epicranial aponeurosis. Eyebrow skin and root of nose. Raises eyebrows. Epicranius Occipital Occipital and temporal bones. Epicranial aponeurosis. Fixes aponeurosis and pulls scalp posteriorly Orbicularis oculi Frontal/maxillary bones and ligaments around orbitOmotransverse muscle - Origin; Optic canal; Orbicularis oculi muscle; Orbicularis oculi muscle - Insertion; Orbicularis oculi muscle - Origin; Orbicularis oris muscle; Orbit; Orbital fissure; Orbital part of orbicularis oculi muscle; Osseous nasal aperture; Palatine bone; Palatinus - Origin; Palatomaxillary suture; Palmar sesamoid bonesOccipitofrontalis muscle consists of two muscle bellies connected by epicranial aponeurosis that spans the dome of the skull.. Frontal belly overlies the forehead and …Orbicularis oculi is a facial muslce that participates in protection of the eyes and ocular reflections. Get more with its anatomy at Kenhub!

Study with Quizlet and memorize flashcards containing terms like Orbicularis Oculi: Action, Orbicularis Oculi: Origin and Insertion, Orbicular Oris: Action and more. Try Magic Notes and save time. Try it free. Try Magic Notes and save time Crush your year with ...The orbicularis oris is a circular muscle that moves the lips, and the orbicularis oculi is a circular muscle that closes the eye. The occipitofrontalis muscle moves up the scalp and eyebrows. The muscle has a frontal belly and an occipital (near the occipital bone on the posterior part of the skull) belly.The depressor labii inferioris (or quadratus labii inferioris) is a facial muscle that helps lower the bottom lip. This muscle arises from the oblique line of the mandible, and inserts on the skin of the lower lip, blending in with the orbicularis oris muscle. At its origin, depressor labii is continuous with the fibers of the platysma muscle.Aug 24, 2023 · Orbital part: overlays the orbital rim and originates from the nasal part of frontal bone, frontal process of maxilla and medial palpebral ligament. The fibers encircle the orbit completely, extending into the soft tissues of adjacent regions. The striated levator palpebrae superioris (LPS) muscle is innervated by the oculomotor nerve, and has a common origin with the superior rectus muscle. Anteriorly, it becomes the levator aponeurosis as it passes anterior to Whitnall ligament, and inserts into the anterior tarsal surface. ... Orbicularis oculi: Closes the eyelid, innervated by ...

There is no levator anguli oculi medialis in the ox; fibers of the frontalis muscle insert along the entire upper edge of the orbicularis oculi and perform a similar function by raising the skin above the eye. Retractor anguli oculi lateralis • Origin: Side of the head to the rear of the eye. • Insertion: Outer (rear) corner of the eye region.The orbicularis oris muscle is a complex of muscles in the lips that encircles the mouth in Human anatomy. It is a sphincter, or circular muscle, but it is actually composed of four independent quadrants that interlace and give only an appearance of circularity. It is also one of the muscles used in the playing of all brass instruments and some ...Origin: Anterior portion of the galea aponeurotica; Insertion: Interdigitates with the orbicularis oculi, procerus, and corrugator muscles. (Interdigitation refers to the intertwining of ...(Bulbus oculi, orbicularis oculi muscle) oid- New L. - oid (from Gr. o + eidos, form), suffix that indicates resemblance to. (Arachnoid, diploid, ptergoid, sphenoid)Symptoms will typically originate in the area of the orbicularis oculi muscle of the eye and may spread in a caudal or cranial direction (Video 1). There is a lot of variability in the pattern and temporal course of the disorder. Some cases are characterized by onset in the orbicularis oris muscle of the mouth and the buccinator muscles. The ...Other facial muscles around the eye, for instance, the orbicularis oculi muscle and frontalis muscle, that did not differ either within or between species. The only exception was the retractor anguli oculi lateralis muscle (RAOL). ... Complete mitochondrial genomes of ancient canids suggest a European origin of domestic dogs. Science 342, 871 ...

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ORBICULARIS OCULI. ORIGIN Medial orbital margin and lacrimal sac (orbital, palpebral and lacrimal parts) INSERTION Lateral palpebral raphe: ACTION Closes eyelids, aids passage and drainage of tears: NERVE Temporal and zygomatic branches of facial nerve (VII) ...Orbicularis oculi SFEMG studies were conducted in 142 consecutive patients with symptoms and/or findings of OMG and negative AChR antibody during the period of 5 years. Retrospective chart review was conducted 2 years after the SFEMG to determine whether treatments were given and responses to treatment. Orbicularis oculi SFEMG was abnormal in ...The orbicularis oris is a circular muscle that moves the lips, and the orbicularis oculi is a circular muscle that closes the eye. The occipitofrontalis muscle moves up the scalp and eyebrows. The muscle has a frontal belly and an occipital (near the occipital bone on the posterior part of the skull) belly. In other words, there is a muscle on the forehead …Origin The Palpebral part of the Orbicularis oculi muscle origin from the Lateral part of the medial palpebral ligament. Insertion The Palpebral part of the Orbicularis oculi muscle inserted on the Lateral palpebral raphe. Action Closes lids gently while blinking and sleeping. c. Lacrimal part, lateral and deep to the sac of lacrimal

As it approaches the angle of the mouth, it contributes to the formation of the modiolus by blending with the zygomaticus major superiorly, with the depressor anguli oris inferiorly and the orbicularis oris laterally. Innervation. Risorius is innervated by the buccal branch of facial nerve (CN VII). Blood supplyThe orbicularis oculi muscle surrounds each eye. The action of this muscle is to close the eye. The orbicularis oris muscle surrounds the mouth. ... See full answer below.When the levator palpebrae superioris is inhibited, the orbicularis oculi muscle experiences a neural impulse that results in the closure of the eyelid. When the action of the orbicularis oculi is ...Stationary bone is called the point of origin for the skeletal muscle, while the one which moves is known as the point of insertion. ... Orbicularis oculi . Origin: Frontal and maxillary bones ... Action: Closes the eyelids . Orbicularis oris . Origin: Muscles around the mouth Insertion: Skin around the mouth Action: Closes and protrudes the ...The temporalis muscle is the most powerful muscle of the temporomandibular joint. The temporalis muscle can be divided into two functional parts; anterior and posterior. The anterior portion runs vertically and its contraction results in elevation of the mandible (closing the mouth). The posterior portion has fibers which run horizontally and ...Little is currently known about the variations in the muscular band around the orbicularis oculi muscle (OOc) region, and so the aim of the current study was to describe in anatomic terms the morphologic patterns of the lateral muscular bands of the OOc. Sixty-one hemifaces from embalmed Korean adult cadavers (34 males, 27 females; age range ...Frontalis muscle. The frontalis muscle (from Latin 'frontal muscle') is a muscle which covers parts of the forehead of the skull. Some sources consider the frontalis muscle to be a distinct muscle. However, Terminologia Anatomica currently classifies it as part of the occipitofrontalis muscle along with the occipitalis muscle. [2]• orbicularis oculi • orbicularis oris • risorius • zygomaticus major • zygomaticus minor • buccinator • platysma 3. Demonstrate the actions of these muscles in your body. 4. Locate the origins and insertions of these muscles in the human skull and skeleton. 5. Study figures 11.1 and 11.2 and table 11.2. 6.

The lacrimal part of the orbicularis oculi (Latin: pars lacrimalis musculi orbicularis oculi) is a small muscle lying between the medial palpebral ligament and lacrimal sac.It is one of the orbicularis oculi muscle parts.. The lacrimal part is also known as the deep part of the orbicularis oculi muscle (Latin: pars profounda musculi orbicularis oculi) because it lies most deeply.

Terms in this set (12) What is the origin of the masseter muscle? zygomatic arch. What is the action of the risorius? abducts corner of mouth. What kind of muscle is the orbicularis oculi orbicularis oris muscle in terms of action? sphincter. What muscle originates on the temporal fossa? temporalis.Fibers of this orbicularis oculi muscle part run around the orbital opening and insert into the origin site. Origin and insertion of orbicularis oculi by Anatomy Next . Action. Contractions of the orbital part of the orbicularis oculi lift the cheek and narrow the space between the eyelids (close the eyelids). Action of orbicularis oculi by ...Origin: Anterior portion of the galea aponeurotica; Insertion: Interdigitates with the orbicularis oculi, procerus, and corrugator muscles. (Interdigitation refers to the intertwining of ... Apr 9, 2023 · The corrugator supercilii is a much smaller muscle and is located posteriorly to the orbicularis oculi. Attachments – Originates from the medial aspect of the superciliary arch and inserts onto the skin of the eyebrow. Actions – Draws the eyebrows together, creating vertical wrinkles on the bridge of the nose (associated with frowning).Origin: superior nuchal line (occipital bone). Insertion: epicranial aponeurosis. Action: moves the scalp posteriorly. Innervation: posterior auricular nerve, a branch of the facial nerve (CN VII). Blood supply: branches of the posterior auricular and occipital arteries. Frontal belly (Frontalis muscle) Origin: epicranial aponeurosis. From these two points of origin, the buccinator muscle then extends and inserts (attaches) to the orbicularis oris. The orbicularis oris is a muscle located around the mouth in the area of the ... The levator palpebrae superioris muscle origin is the periosteum of the lesser wing of the sphenoid bone, superior to the optic foramen. ... (Müller muscle), and orbicularis oculi. The superior branch of the oculomotor nerve dually innervates the superior rectus muscle and levator palpebrae superioris muscles, allowing synchronous elevation of ...

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When its forehead attachment is fixed, the frontal belly aids the procerus, orbicularis oculi and corrugator supercilii muscles to frown the eyebrows by pulling the skalp forwards and wrinkling the forehead. Since the muscle heads of the frontal belly are separated, it is possible to perform these movements on only one of the halves of the face.The orbicularis oculi muscles derive from the mesenchyme in the second pharyngeal arch (Moore et al., 2015) and are innervated by the VII cranial nerve (Ouattara et al., 2004). Weakness of the orbicularis oculi muscles is often apparent in neuromuscular disorders affecting the neuromuscular junction (Miller et al., 2008). Citation, DOI, disclosures and article data. The corrugator supercilii muscles are two small, triangular facial muscles, which contribute to movement of the eyebrows , including frowning. They are located deep to the frontal part of occipitofrontalis and orbicularis oculi muscles, with which they blend 2.Indeed, the orbicularis oculi contraction is the most frequent and most stable facial activity accompanying the experience of acute as well as chronic pain (Craig et al., 2001; Kunz et al., 2019). Furthermore, the orbicularis oculi contraction is unique in the sense that this facial movement seems to encode the sensory dimension of pain and ...Jul 5, 2023 · Buccinator has a number of origin points which is the basis for subdividing the muscle fibers into superior, inferior and posterior parts . This muscle is the main muscle of the cheek, that provides it with structure and tightness. It compresses the cheek against the molar teeth, which is important to keep the food bolus central in the oral ... The orbicularis oculi (Latin: musculus orbicularis oculi) is a circular-shaped facial muscle located around the opening of the eye. This muscle is classified as the circumorbital and palpebral muscle. Among other functions, the orbicularis oculi muscle is involved in closing the eyelid. Orbicularis oculi by Anatomy Next.Muscles with this fascicular arrangement may be termed as orbicular muscles (Latin: orbiculus = small disc), such as the orbicularis oculi (which covers the eye) and orbicularis oris (which surrounds the mouth). Convergent A convergent (a.k.a. triangular) muscle has a broad origin with fascicles converging toward a single tendon of insertion.Origin and insertion. The lateral rectus muscle is a flat strap-shaped muscle that is wider in its anterior part. It arises from the lateral part of the common tendinous ring and crosses the superior orbital fissure. Additionally, a small slip arises from a spine on the greater wing of the sphenoid bone.The muscle then runs anteriorly along the lateral wall of the orbit to insert at the ... ….

Surnames are an integral part of our identity and can tell us a lot about our family history. While some surnames are common, others are quite unique. In this article, we will explore the origins and meanings of some of the most popular sur...noun. or· bi· cu· lar· is ȯr-ˌbik-yə-ˈler-əs. plural orbiculares - (ˌ)ēz. : a muscle encircling an orifice.Muscles with this fascicular arrangement may be termed as orbicular muscles (Latin: orbiculus = small disc), such as the orbicularis oculi (which covers the eye) and orbicularis oris (which surrounds the mouth). Convergent A convergent (a.k.a. triangular) muscle has a broad origin with fascicles converging toward a single tendon of insertion.origin of orbicularis oculi. frontal bone and maxilla. insertion of orbicularis oculi. tissue around eyes. action of orbicularis oculi. closes eyes, makes eyes squint, blink, and wink. origin of buccinator. maxilla and mandible near molars. insertion of …Omotransverse muscle - Origin; Optic canal; Orbicularis oculi muscle; Orbicularis oculi muscle - Insertion; Orbicularis oculi muscle - Origin; Orbicularis oris muscle; Orbit; Orbital fissure; Orbital part of orbicularis oculi muscle; Osseous nasal aperture; Palatine bone; Palatinus - Origin; Palatomaxillary suture; Palmar sesamoid bonesMost popular streaming TV shows are found on Netflix. But Netflix hardly produces any of them. Every week, the majority of the most popular streaming TV shows are found on Netflix. But Netflix hardly makes any of them. Just 3% of Netflix’s ...Instructor Dan Washmuth View bio Learn about the eye's orbicularis oculi muscle. Understand its functions and discover its location, along with the orbicularis oculi's origin and...The orbicularis oculi is a muscle in the face that closes the eyelids. It arises from the nasal part of the frontal bone, from the frontal process of the maxilla in front of the lacrimal groove, and from the anterior surface and borders of a short fibrous band, the medial palpebral ligament. From this origin, the fibers are directed laterally, forming a broad and thin layer, which occupies the ... Question: Origin and Insertion of these muscle: Occipitofrontalis Orbicularis oculi Orbicularis oris Risorius Buccinator Zygomaticus Masseter Temporalis Lateral Pterygoid Occipitofrontalis Orbicularis oculi OrbicularisOrigin and insertion. Depressor labii inferioris originates from the oblique line of mandible, between the symphysis menti and mental foramen.From here, the muscle courses superomedially, inserting to the skin and submucosa of lower lip. The mandibular end of depressor labii inferioris is continuous with platysma, while the labial attachment fuses with its counterpart and inferior fibers of ... Origin of the orbicularis oculi, orb (n.) mid-15c., "sphere, globe, something spherical or circular, orbit of a heavenly body," from Old French orbe "orb, globe" (13c.) and directly from Latin orbem (nominative orbis) "circle, disk, ring, hoop, orbit," probably related to orbita "wheel track, rut," a word of unknown and much-disputed origin. Watkins suggests a connection with ..., Orbicularis Oculi Origin, Insertion, Action. Origin: Palpebral part: to the medial palpebral ligament and adjacent bone on the medial side of the orbit. Orbital part: to a slip of bone adjacent to the orbit on the orbital process of the frontal bone, to the frontal process of the maxilla, and to the medial palpebral ligament between the two ..., 1.) Frontalis - Origin is galea aponeurotica ; Insertion :- Orbicularis oculi muscle ; Function - Raises eyebrows and wrinkles forehead. 2.) Temporalis - Origin: Temporal fossa and temporal fascia ; Insertion - coronoid process of the mandible and th …. View the full answer., This part of the orbicularis oculi muscle inserts into the wall of the lacrimal sac. Action. Contractions of the lacrimal part of the orbicularis oculi enlarge and widen the lacrimal sac and improve the tear drainage and flow. Innervation. The lacrimal part of the orbicularis oculi is innervated by the zygomatic branch of the facial nerve (CN VII)., Lateral pterygoid muscle (Musculus pterygoideus lateralis) Lateral pterygoid is a two-headed, fan-shaped muscle located infratemporal fossa. It is one of the four masticatory muscles, along with the medial pterygoid. All these muscles act upon the temporomandibular joint (TMJ) to enable chewing (mastication) and biting., Mar 17, 2023 · The levator palpebrae superioris muscle origin is the periosteum of the lesser wing of the sphenoid bone, superior to the optic foramen. ... (Müller muscle), and orbicularis oculi. The superior branch of the oculomotor nerve dually innervates the superior rectus muscle and levator palpebrae superioris muscles, allowing synchronous elevation of ..., Corrugator Supercilii: A small muscle located superiorly to the orbicularis oculi. Orbicularis Oculi: A thin muscle that surrounds the eye socket. mentalis: This muscle pushes the lower lip uppers and wrinkles the chin. levator labii superioris alaeque nasi: The muscle of the upper lip. It acts to lift the upper lift and dilates nostril ..., The first cause of wrinkles around the eyes is that the orbicularis oculi muscle gets tired due to overuse of the eyes. Getting enough sleep and rest is impo..., The final depressors of the brow are the orbicularis oculi muscle and depressor supercilii muscles. Although some consider the depressor supercilii to be a portion of the ocbicularis oculi, most aesthetic physicians recognize it as a distinct muscle with an origin on the medial orbital rim near the lacrimal bone and an insertion onto the …, Apr 8, 2020 · An EMG of the frontalis, orbicularis oculi, orbicularis oris, and zygomaticus muscles on the affected side gives a good overview of facial nerve function. If only part of the peripheral facial nerve is affected, nEMG also is abnormal only in the affected area. ... On the prognosis of peripheral facial paralysis of endotemporal origin. Ann Otol ..., Buccinator muscle (Musculus buccinator) The buccinator muscle is a thin quadrilateral facial muscle that is the main component of the cheek.It belongs to the buccolabial group of facial muscles along with levator labii superioris alaeque nasi, levator labii superioris, zygomaticus major, zygomaticus minor, levator anguli oris, risorius, depressor labii inferioris, mentalis, orbicularis oris ..., The Orbicularis oculi ( Orbicularis palpebrarum) arises from the nasal part of the frontal bone, from the frontal process of the maxilla in front of the lacrimal groove, and from the anterior surface and borders of a short fibrous band, the medial palpebral ligament. From this origin, the fibers are directed lateralward, forming a broad and ..., Detail of the Mona Lisa, who is known for her smile. A smiling child. A smile is a facial expression formed primarily by flexing the muscles at the sides of the mouth.Some smiles include a contraction of the muscles at the corner of the eyes, an action known as a Duchenne smile.Among humans, a smile expresses delight, sociability, happiness, joy, or amusement., It reportedly has a muscular insertion into the deep surface of the orbicularis oculi muscle (OOc), and a cutaneous insertion along the malar and nasojugal fold 2,3. Although the detailed ..., The orbicularis oculi (OOc) is a sphincteric muscle of the eyelids, whereas contraction of the orbicularis oris (OOr), another sphincteric muscle, causes narrowing of the lips. ... The extending fibers of the OOc that divided the connecting fibers were attached to the maxilla just above the origin site of the LLS., orbicularis oculi. name a muscle that closes the eye. one:rotates and extends the neck; both flex the neck. what is the action of the sternocledimastoid. temporalis. what muscle is the synergist with the masseter. Study with Quizlet and memorize flashcards containing terms like Zygomatic arch, Abducts corner of mouth, Sphincter muscles and more., The orbicularis branches were often identified about 1-1.5 cm lateral to the origin of the zygomaticus major muscle. If the orbicularis branch more than moderate thickness is identified within the SMAS layer, tissue excision should be avoided (Fig. 10). Often, the orbicularis branch cannot be identified in elevation of the OOM with the SMAS flap., The orbicularis oculi muscle is a muscle of facial expression, a ring-like muscle functioning in a number of eyelid movements.. Gross anatomy. The orbicularis oculi muscle is subdivided into orbital, palpebral and lacrimal parts. Each has defined actions. The orbicularis oculi is secured to the medial and lateral palpebral ligament forming a ring in the eyelid tissue centered about the ..., Created by sunflowerIME Terms in this set (19) Orbicularis oris Muscle Origin: Encircle of the mouth Insertion: Angle of the mouth Action: pressing together, tightening and …, Finally, by week 24 (232 ± 18 mm), after eyelid separation, the eyelids begin to take their nearly developed shape. 14, 18, 22 At this stage, the orbicularis oculi muscle extends medially and laterally to be attached to the medial and lateral palpebral ligaments, respectively, 14 the tarsal plate has lengthened and increased in width, the ..., The origin (immobile attachment during an action) ... The main retractor muscle is the levator palpebrae superioris, while orbicularis oculi is the protractor muscle. Levator palpebrae superioris ..., Ptosis (drooping upper eyelid) - due to paralysis of the levator palpabrae superioris and unopposed activity of the orbicularis oculi muscle. ' Down and out ' position of the eye at rest - due to paralysis of the superior, inferior and medial rectus, and the inferior oblique (and therefore the unopposed activity of the lateral rectus ..., The deep part (lacrimal part; Tensor tarsi) of orbicularis oculi is a small, thin muscle, about 6 mm in breadth and 12 mm in length, situated behind the medial palpebral ligament and lacrimal sac.The lacrimal part of the Orbicularis oculi draws the eyelids and the ends of the lacrimal canals medialward and compresses them against the surface of the globe of the eye, thus placing them in the ..., Origin: (proximal attachments) Galea aponeurotica. Insertion: (distal attachments) Skin around eyebrows and nose. 1. 2. 3. Actions of Frontalis Muscle on the face: Raises eyebrows & wrinkles forehead as it draws scalp back. Nerve to Muscle and its Spinal Segment: Temporal branch of facial nerve., Finally, by week 24 (232 ± 18 mm), after eyelid separation, the eyelids begin to take their nearly developed shape. 14, 18, 22 At this stage, the orbicularis oculi muscle extends medially and laterally to be attached to the medial and lateral palpebral ligaments, respectively, 14 the tarsal plate has lengthened and increased in width, the ..., In the facial region, the palpebral portion of the orbicularis oculi (OOc) dilates the lacrimal sac, thereby facilitating tear aspiration. The lacrimal portion of the OOc likely compresses the lacrimal sac, forcing tears into the nose. ... In the midface, it passed between the origin of the levator labii superioris alaeque nasi (LLSAN) and the ..., plural orbiculares oculi. : the muscle encircling the opening of the orbit and functioning to close the eyelids., Anatomy. In 1932, Whitnall first described the lower eyelid depression as a "fascial interstice fixed to the bone between the orbicularis oculi and angular head of the quadrates labii superioris muscles." 3 The term "nasojugal fold" was first introduced in 1961 by Duke-Elder and Wybar; it was defined as "running downwards and outwards from the inner canthus, the junction of the loose ..., Origin: Zygomatic bone, Insertion; angle of mouth; ... Orbicularis Oculi. A sphincter that surrounds the palpebral fissure, the opening between the lids. It is attached medial to the medial palpebral ligament and laterally blends with the retractor anguli oculi lateralis muscle. It narrows the opening to a horizontal slit when it contracts ..., noun. or· bi· cu· lar· is ȯr-ˌbik-yə-ˈler-əs. plural orbiculares - (ˌ)ēz. : a muscle encircling an orifice., Little is currently known about the variations in the muscular band around the orbicularis oculi muscle (OOc) region, and so the aim of the current study was to describe in anatomic terms the morphologic patterns of the lateral muscular bands of the OOc. Sixty-one hemifaces from embalmed Korean adult cadavers (34 males, 27 females; age range ..., The tones of these two muscles are in balance with the opposing tone of orbicularis oculi, thereby maintaining the eyes open and defining the size of palpebral fissure. Learn more about the structures of the upper eyelid with our articles, video tutorials, quizzes and atlas images., 1.) Frontalis - Origin is galea aponeurotica ; Insertion :- Orbicularis oculi muscle ; Function - Raises eyebrows and wrinkles forehead. 2.) Temporalis - Origin: Temporal fossa and temporal fascia ; Insertion - coronoid process of the mandible and th …. View the full answer.