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75 Cards in this Set
- Front
- Back
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which bones make up the roof of the orbit
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frontal bone and lesser wing of sphenoid
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which bones make up the medial wall of the orbit
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ethmoid, lacrimal, frontal process of maxilla and sphenoid
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which bones make up the floor of the orbit
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maxillary, zygomatic and palatine
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what bones make up the lateral wall of the orbit
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zygomatic and greater wing of sphenoid
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what is the space between the margins of the eyelids
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palpebral fissure
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what is the space behind closed eyelids called
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conjunctival sac
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what is the area called where the sclera of the yeball is reflected to the eyelid
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superior and inferior conjunctival fornices
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the skeleton of the eyelids is formed by dense connective tissue plates known as...
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superior tarsus and inferior tarsus
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inflammation of the tarsal glands, a gland that secretes an oily substance to prevent overflow of tears, is known as...
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chalezion
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inflammation of the sweat glands and sebaceous glands within the eyelashes is called
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hordeolum/sty
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the aponeurosis of the ___ attaches to the superior tarsus
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levator palpebrae superioris
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what structure is continuous with the periosteum at the level of the orbital margin and fuses with the tarsi
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orbital septum
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tears made in the lacrimal gland flow medially into the...
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lacrimal lake
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tears enter the lacrimal sac to flow into the nasolacrimal duct through which structure
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lacrimal puncta through lacrimal canaliculi into lacrimal sac
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what is the continuation of the lacrimal sac that emptys into the nasal cavity and is gaurded by a valve
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nasolacrimal duct
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what is the elevated mucosal site in the lacrmal lake called
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lacrimal caruncle
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what type of innervation does the lacrimal gland receive
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sensory, sympathetic and parasympathetic
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parasympathetic innervation to the lacrimal gland is via what nerve
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facial nerve
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what is the outer, fibrous layer of the glbe of the eyeball called
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sclera
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what is the name of the junction where the cornea meets the sclera (actually continuous)
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corneal limbus
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what are the three parts of the middle vascular layer of the eye
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choroid, ciliary body and iris
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what is the largest part of the vascular layer and provides the inner retinal layer with an oxygen supply and nutrients
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choroid (responsible for "red eye")
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what is the anterior continuation of the choroid in the eye
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ciliary body
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folds of the ciliary form ciliary processes and form ___ of the lens, and secrete ___
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suspensory ligament/aqueous humor
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muscle fibers arranged in a circular pattern form sphincter papillae and are innervated by...
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parasympathetic fibers
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muscles arranged radially around the iris form the dilator papillae and are innervated by...
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sympathetic fibers
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what are the two parts of the retina
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optic part and non visual part
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the two parts of the retina are continuous as a jagged line called the...
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ora serrata
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what are the two parts of the optic part of the retina
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outer pigmented layer (attached to choroid), and an inner neural layer
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which two parts of the eye can separate in a detached retina
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outer pigmented layer and neural layer of retina
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in what layer of the eye would you find the optic disc
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posterior part of optic part of the retina
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the site where the optic nerve leaves the eye is also the site of the branching of...
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central artery of the retina
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the highest visual sensitivity is at the macula lutea with...
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fovea centralis
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increased intracranial pressure can result in a bulging of the optic disc called...
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papilledema
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what parts of the eye do the non-visual part of the retina cover
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inner surface of the ciliary body and iris
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what is the space between the cornea and the iris, filled with aqueous humor
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anterior chamber
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what is the space between the posterior surface of the iris and anterior surface of lens, filled with aqueous humor
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posterior chamber
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what takes up the aqueous humor in the anterior and poterior chambers
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scleral venous sinus and iridiocorneal angle
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reduced uptake of aqueous humor may lead to increased intraocular pressure also known as...
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glaucoma
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the vitreous humor is traversed by what structure...
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hyaloids canal
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what surrounds the eyeball forming a socket for the eyeball separating it from orbital fat
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fascial sheath of the eyeball (tenon's capsule)
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the medial and lateral expansions of the sheath form medial and lateral ___ ligaments that limit abduction and adduction of eyeball
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check
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the blending of check ligaments and muscles forms...
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suspensory ligament of the eyeball
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which wall of the orbit are parallel to each other
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medial
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what is the innervation of the levator palpebrae superioris
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oculomotor nerve
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what is the innervation of the medial rectus
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oculomotor nerve
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what is the innervation of the lateral rectus
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abducens nerve
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what is the motion of the superior rectus muscle
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elevation and adduction of eyeball
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what innervates the superior rectus
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oculomotor nerve
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what is the action of the inferior rectus
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depress and adduct eye
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what is the action of the superior oblique muscle
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abducts and depress
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what is the innervation of the superior oblique
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trochlear nerve
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what is the action of the inferior oblique muscle
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abducts and elevate eye
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what is the innervation of the inferior oblique muslce
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oculomotor nerve
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what artery supplies the eye
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ophthalmic artery
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where does the ophthalmic artery branch from
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internal carotid
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how does the opthalmic artery enter the orbit of the eye
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through optic canal
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what three veins form the triangle of danger
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superior opthalmic, supraorbital and angular veins
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opthalmic veins drain into...
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cavernous sinus
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what are the four veins called that drain the bulb of the eyeball, draining into the opthalmic veins
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vorticose veins
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how does the ophthalmic division of the trigeminal nerve enter the orbit
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via superior orbital fissure
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the lacrimal nerve is joined by the ____ nerve that carries parasympathetics to the lacrimal gland
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zygomaticotemporal
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what are the branches of the nasociliary nerve
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long ciliary, communicating branch to ciliary ganglion, posterior and anterior ethmoidal nerve, infratrochlear nerve
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which of the branches of the nasociliary nerve are sensory to eyeball, and carry sympathetic fibers to the dilator pupillae
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long ciliary nerves
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what nerve that is a branch of the nasociliary nerve supplies the ethmoid and sphenoid air sinuses
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posterior ethmoidal nerve
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what nerve that is a branch of the nasociliary nerve supplies nasal cavity and skin on nose
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anterior ethmoidal nerve
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what nerve that is a branch of the nasociliary nerve supplies the side of the nose and medial side of eyelids
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infratrochlear
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what type of fibers does the oculomotr nerve carry
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somatic motor and viscermotor (parasympathetic)
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the superior ramus of the oculomotor nerve innervates what muscles
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superior rectus and levator palpebrae superioris
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the inferior ramus of the oculomotor nerve innervates what muscles
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medial rectus, inferior rectus, and inferior oblique
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a branch to ciliary ganglion carries preganglionic parasympathetic fibers from ____ nucleus
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Edinger-Westphal
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the ciliary ganglion receives preganglionic parasympathetic fibers from...
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oculomotor (motor root)
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the ciliary ganglion receives sensory and some sypathetic fibers from
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nasociliary nerve (sensory root)
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the ciliary ganglion has connection with ___ that carries postganglionic sympathetic fibers
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cavernous plexus
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what are the names of the nerves that travel from the ciliary ganglion to the sensory fibers, and other parts of iris
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short ciliary nerves
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