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Conjunctiva |
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mucus |
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Tarsal glands |
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oil |
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Lacrimal glands |
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salt solution |
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The eyeball is wrapped in adipose tissue within the orbit. What is the function of the adipose tissue? |
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Protection |
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What are the 7 bones that form the bony orbit? |
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1. Maxilla
2. Ethmoid
3. Lacrimal
4. Palatine
5. Sphenoid
6. Zygomatic
7. Frontal |
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What us a sty? |
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A sty is the inflammation of a ciliary glands (modified sweat glands) that lie between tge eyelashes and help to lubricate the eyeball. |
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What is conjunctivitus? |
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Inflammation of the conjunctiva, which is the mucus membrane that lines the internal surface of the eyelids and eyeball. |
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Why might it be necessary to blow one's nose after having a good cry? |
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Tears released by lacrimal glands flush across the eyeball into the lacrimal canal to the lacrimal sacs to the nasolacrimal duct into the nasal cavity. |
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Attaches the lens to the ciliary body |
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suspensory ligament |
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Fluid filling the anterior segment of the eye |
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aqueous humor |
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The blind spot |
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optic disc |
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Contains muscle that controls the size of the pupil |
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iris |
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Drains the aqueous humor from the eye |
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canal of Schlemn |
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"Sensory" tunic |
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retina |
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Substance occupying the posterior segment of the eyeball |
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vitreous humor |
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Forms most of the pigmented vascular tunic |
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choroid |
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Tiny oit in the macula lutea; contains only cones |
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foves centralis |
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Important light-bending structure of the eye; shape can be modified |
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lens |
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Anterior transparent part of the fibrous tunic |
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cornea |
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Composed of tough, white, opaque, fibrous connective tissue |
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sclera |
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The intrinsic eye muscles are under the control of which of system? |
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Autonomic nervous system |
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Collectively called the ossicles |
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1. Anvil (incus)
2. Hammer (malleus)
3. Stirrup (stapes) |
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Ear structures involved with balance |
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1. Vestibule
2. Semicircular canals |
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Transmits sound vibrations to the ossicles |
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tympanic membrane |
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Three circular passages each in a different plane of space |
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semicircular canals |
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transmits the vibratory motion of the stirrup to the fluid in the inner ear |
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oval window |
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Passage between the throat and the tympanic cavity |
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auditory (pharyngotympanic) tube |
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Passage between the throat and the tympanic cavity |
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auditory (pharyngotympanic) tube |
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fluid contained within the membranous labryrinth |
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endolymph |
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contains the organ of corti |
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cochlear duct |
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Sites of the maculae |
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1. Vestibular sacs
2. Otolith |
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Hair cells of organ of Corti rest on this membrane |
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basilar membrane |
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Gel-like membrane overlying the hair cells of the organ of Corti |
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tectorial membrane |
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Contains the cristae ampullaris |
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Ampulla |
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Function in static equilibrium |
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1. Otholis
2. Vestibular nerve
3. Vestibular sacs |
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Function of the dynamic equilibrium |
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1. Semicircular ducts
2. Ampulla
3. Cupula
4. Vestibular nerve |
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Carries auditory information to the brain |
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cochlear nerve |
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Gelatinous cap overlaying hair cells of the crista ampullaris |
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cupula |
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Grains of calcium carbonate in the maculae |
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otoliths |
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