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36 Cards in this Set
- Front
- Back
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rods and cones nuclei
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above rods and cones. looks like columnar tissue
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ganglion nuclei
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small, round dark. top layer of the retina
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bipolar nuclei
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small circles squished together in a row. located in the retina above the ganglion nuclei
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sclera
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white inside the eye
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Iris
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color of the eye
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lacrimal gland
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the exocrine tear gland in the superior lateral corner of the eye
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extrinsic eye muscles
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muscles that control eye movement
rectus : 4, S, I, L, M Oblique: 2 S, I |
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conjuctiva
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the thin, transparents mucous membrane adhereing to the anterior surface of the eye and lining the eyelids.
accessory organ to the eye |
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Fibrous tunic
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the outer coat of the eye.
the cornea is the anterior, transparent portion. the sclera is the white fibrous portion |
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Vascular Tunic
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middle coat of the eye.
posterior portion is thin, heavily pigmented choriod anterior portion include the circular ciliary body, ciliary muscles |
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ciliary muscles
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ciliary muscles are attached to the rim of the lens by means of suspensory ligaments
iris- attached to the anterior edge of the ciliary body |
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ciliary body
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a ring of ridges around the outside of the iris's margin
formed by ciliary muscles |
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aqueous humor
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a watery liquid in the anterior compartment
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lens
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a plasticlike ball of translucent tissue. very clear
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retina
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a thin film of gray matter loosely associated with the inside posterior wall of the eyeball
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choroid
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the pigmented region of the vascular tunic in the posterior region of the eyeballs' wall
deep to the sclera, superficial to the retina |
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tapetum lucidum
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not in humans. iridescent, can be seen in choroid
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sclera
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the white portion of the fibrous tunic
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optic nerve
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the nerve bundle projecting from the posterior of the eyeball
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Nervous/sensory tunic
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inner coat of the eye
two layers: pigmented retina, sensory retina |
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sensory retina
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contains rods and cones, optic disc and optic nerve
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astigmatism
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abnormal curvature of the cornea
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most common form of color blindness
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red-green deficiency. --> red or green sensitive cones are missing or defective
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auricle (pinna)
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the external flap that protects the auditory opening, directing sound waves toward it. functions as a "radiator" in thermoregulation
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tympanic membrane
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aka eardrum, covers the end of the external auditory meatus to form a boundry with the middle ear. it vibrates when struck by airborne sound waves, carrying the sound energy into the middle ear
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malleus
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auditory ossicle. aka hammer. tiny club shaped bone attached to the ear drum. vibrates
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incus
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auditory ossicle. anvil. tiny bone forms a synovial joint with the malleus. incus vibrates when it recieves energy from the malleus
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stapes
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auditory ossicle. stirrup. joined to the incus, from which it recieves vibrations.
fits into the oval window |
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auditory tube
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collapsible tube running between the middle ear and the pharynx.
allows internal air pressure to equalize with atmospheric air pressure |
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inner ear
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receptors for hearing and equilibrium are located. within a hollow area in the petrous portion of the temporal bone
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endolymph
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fluid inside the membranous labyrinth
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perilymph
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fluid outside the membranous labyrinth
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bony labyrinth
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mazelike, contains membranous labyrinth
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cochlea
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long passage. 3 chambers. seperated by a Y shaped partition.
base of the Y: spiral lamina branches: vestibular membrane and basilar membrane |
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vestibule
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central area of the inner ear
contains saclike portions of the membranous labyrinth |
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semicircular canals
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three round passages, each on a different plane. have bubbles at thier bases called ampullae
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