orbicularis oculi definition
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Orbicularis oculi muscle 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.he 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.
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Superior oblique muscle The superior oblique muscle, or obliquus oculi superior, is a fusiform muscle originating in the upper, medial side of the orbit (i.e. from beside the nose) which abducts, depresses and internally rotates the eye. It is the only extraocular muscle innervated by the trochlear nerve (the fourth cranial nerve).he superior oblique muscle, or obliquus oculi superior, is a fusiform muscle originating in the upper, medial side of the orbit (i.e. from beside the nose) which abducts, depresses and internally rotates the eye. It is the only extraocular muscle innervated by the trochlear nerve (the fourth cranial nerve).
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- a compound hinge synovial joint between the humerus and the bones of the forearm; it consists of the articulatio humeroradialis and the articulatio humeroulnaris. Synonym(s): articulatio cubiti [TA], elbow (2) [TA], cubital joint.
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Neurologic Exam Cranial Nerves 5 & 7 - Corneal reflex The ophthalmic division (V1) of the 5th nerve is the sensory or afferent limb and a branch of the 7th nerve to the orbicularis oculi muscle is the motor or efferent limb of the corneal reflex. The limbal junction of the cornea is lightly touched with a strand of cotton.ranial Nerves 5 & 7 - Corneal reflex The ophthalmic division (V1) of the 5th nerve is the sensory or afferent limb and a branch of the 7th nerve to the orbicularis oculi muscle is the motor or efferent limb of the corneal reflex. The limbal junction of the cornea is lightly touched with a strand of cotton.
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Chapter 46: The eye The branches of the central artery of the retina are endarteries, so that an occlusion causes loss of vision in the corresponding part of the visual field. The fundus oculi is the posterior part of the interior of the eye as seen on ophthalmoscopy (fig. 46-9).
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Orbicularis oculi Orbicularis oculi Description. The muscle comprises of the following three sections: 1  Orbital part: It forms circular fibers that wrap around the eyes and fuses with nearby muscles on all sides of the orbit, including the temple and cheek.
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Using Orbax for Cats and Dogs to Treat Infections Orbifloxacin is a broad-spectrum antibiotic belonging to the quinolone/fluoroquinolone class. The medication is chiefly indicated for the treatment of bacterial infections triggered by susceptible microorganisms including urinary tract infections (UTI) in dogs and soft tissue infections in cats and dogs.
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- The inferior extensor retinaculum is a complex Y- or X-shaped structure located in the anterior aspect of the foot and ankle comprising four components: the stem or frondiform ligament, the oblique superomedial limb, the oblique inferomedial limb, and the oblique superolateral limb.
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Muscles of Facial Expressions, Chewing and Swallowing, and Muscles Acting on Head (Origin), and I: (Insertion) ORBICULARIS OCULI - A: (Action) Sphincter of eyelids; closes eye in blinking, squinting, and sleep; aids in flow of tears across eye; O: (Origin) Lacrimal bone; adjacent regions of frontal bone and maxilla; medial angle of eyelids; I: (Insertion) Upper and lower eyelids; skin around margin of orbit Name the muscle, A: (Action), O: (Origin), and I: (Insertion) HYOGLOSSUS - A: (Action) Depresses tongue; O: (Origin) Body and greater horn of hyoid bone; I: (Insertion) Lateral and inferior surfaces of tongue Name the muscle, A: (Action), O:  TEMPORALIS - A: (Action) Elevation, retraction, and lateral and medial excursion of the mandible; O: (Origin) Temporal
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Tendinous ring The tendinous ring, also known as the annulus of Zinn, is the common origin of the four rectus muscles (extraocular muscles). The tendinous ring straddles the superior orbital fissure and through it (from superior to inferior) pass: superior division of the oculomotor nerve (CN III)
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- Os acromiale represents an unfused accessory center of ossification of the acromion of the scapula.
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75 11.3 Axial Muscles of the Head, Neck, and Back 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.
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- The superior oblique muscle, or obliquus oculi superior, is a fusiform muscle originating in the upper, medial side of the orbit which abducts, depresses and internally rotates the eye. It is the only extraocular muscle innervated by the trochlear nerve.
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seminiferous tubule One of two or three twisted, curved tubules in each lobule of the testis, in which spermatogenesis occurs. Synonym(s): tubuli seminiferi recti [TA] , convoluted seminiferous tubule, tubuli contorti (2) .
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Orbs â Are they paranormal & what do colored orbs mean? The egg sac, irregular in shape, about the size of a tennis ball, is often seen in the garden, suspended by silk threads. Spider bite in southern Africa: diagnosis and management: the diagnosis of spider bite, especially when the patient is unaware of having been bitten, can be difficult
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Orbicularis Oculi Muscle Orbicularis Oculi Muscle The orbicularis oculi muscle is a ringlike band of muscle, called a sphincter muscle, that surrounds the eye. It lies in the tissue of the eyelid and causes the eye to close or blink. At the same time, it compresses the nearby tear gland, or lacrimal gland, aiding the flow of tears over the surface of the eye.
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- /lenˈtikyələr/. 1  Of or relating to the lens of the eye.  A lenticular is a combination of a special lens and an arrayed image that simulates animation or depth. Autostereoscopic images refer to pictures that take advantage of how our eyes and visual cornea process the two images that the left and right eyes receive.
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urachus urachus. a fetal canal connecting the bladder with the allantois, persisting throughout life as a cord (median umbilical ligament). adj., adj u´rachal. patent urachus a condition in which the urachus remains a hollow tube connecting the bladder and the umbilicus, resulting in an umbilical urinary fistula. fetal canal connecting the bladder with the allantois, persisting throughout life as a cord (median umbilical ligament). adj., adj u´rachal. patent urachus a condition in which the urachus remains a hollow tube connecting the bladder and the umbilicus, resulting in an umbilical urinary fistula.
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Superior oblique muscle The superior oblique muscle, or obliquus oculi superior, is a fusiform muscle originating in the upper, medial side of the orbit (i.e. from beside the nose) which abducts, depresses and internally rotates the eye.It is the only extraocular muscle innervated by the trochlear nerve (the fourth cranial nerve).he great importance of intorsion and extorsion produced by the two oblique muscles can only be understood when it is considered with regards to the other muscle actions present. The two obliques prevent the eye from rotating about its long axis (retina to pupil) when the superior and inferior rectus muscles contract.
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- Orbicularis Oculi is a muscle of the Facial group of Muscles. It surrounds the eye hence named so. Anterior | Laterally.
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Orbicularis oculi Orbicularis oculi Definition. It is a circular band of muscle that surrounds the eye. It is generally a sphincter muscle that lies in the tissue of the eyelid and performs a host of ocular functions.rbicularis oculi Definition. It is a circular band of muscle that surrounds the eye. It is generally a sphincter muscle that lies in the tissue of the eyelid and performs a host of ocular functions.
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urachus u·ra·chus. That part of the allantois between the apex of the bladder and the umbilicus; postnatally, the urachus is normally merely a fibrous cord, the median umbilical ligament, but occasionally the allantoic lumen may persist as a urachal fistula. [G. ourachos, the urinary canal of a fetus].hat part of the allantois between the apex of the bladder and the umbilicus; postnatally, the urachus is normally merely a fibrous cord, the median umbilical ligament, but occasionally the allantoic lumen may persist as a urachal fistula.
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- An osteochondral defect (OCD) of the talus is a lesion involving articular cartilage with or without subchondral bone. Several descriptive terms exist for this type of lesion, including osteochondritis dissecans, osteochondral fracture, transchondral fracture, osteochondral lesion, and flake fracture.
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Osteochondral lesions of the ankle Injuries to the articular surface of the talar dome in the ankle joint are commonly called osteochondral lesions of the talus (OLT). Other terms that refer to the same general process are osteochondral defects (OCD), osteochondritis dissecans, and transchondral fracture. For this discussion, OLT will refer to a focal articular
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- [TA] the prominent triangular ridge on the dorsal aspect of the scapula, providing attachment for the trapezius and deltoid muscles and separating the supraspinous and infraspinous fossae; the acromion is a lateral extension from the spine. Synonym(s): spina scapulae [TA]
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Orbicularis oculi muscle Orbicularis oculi muscle - Additional images. 1  Muscles of head and neck. 2  Frontal bone. Outer surface. 3  Left lacrimal bone. Orbital surface. 4  Left maxilla. Outer surface. 5  The arteries of the face and scalp. 6  Sagittal section of right orbital cavity. 7  Sagittal section through the upper eyelid.