Term
1) Rods and Cones
2) Optic nerve
3) Optic Chiasma
4) Thalamus
5) Occipital lobe: 1/2 cross over @ chiasma, 1/2 do not |
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Definition
| List the path of vision (visual pathway) |
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Term
1) Refraction of light
2) Accomodation
3) Constriction of pupil
4) Convergence of the visual axis |
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Definition
| What are the 4 processes necessary for vision? |
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Term
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Definition
| light waves are bent when they move through different densities - occurs when light waves pass @ an oblique angle from a medium of one optical density into a medium of a different optical density |
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Term
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Definition
| When the ciliary muscles and suspensory ligaments, along w/the structure of the lens itself, enable the lens to adjust shape to facilitate focusing |
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Term
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Definition
| When reading, pupil has to be very relaxed and dilated...In darkness, pupil must dilate even more. |
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Term
| Convergence of the visual axis |
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Definition
| eyes have to focus the object on the fovea centralis - crossing of the eyes when bringing finger closer while focusing on it - very important for focusing on reading (can do exercises to improve this) |
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Term
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Definition
| far-sighted; correct with convex lens |
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Term
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Definition
| near sighted - correct with a concave lens |
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Term
| Convergence of the visual axis |
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Definition
| eyes have to focus the object on the fovea centralis - crossing of the eyes when bringing finger closer while focusing on it - very important for focusing on reading (can do exercises to improve this) |
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Term
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Definition
| unequal curvature of the cornea (rippling; lines will be skewed) |
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Term
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Definition
| denatured protein of the lens or an opacity (light doesn't pass through) |
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Term
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Definition
| when there's an interference w/the drainage of aqueous humor |
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Term
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Definition
| A depression at the center of the macula lutea; in the region of the retina that produces the sharpest vision. |
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Term
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Definition
| a yellowish spot in the central region of the retina |
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Term
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Definition
| the light sensitive biochemical in rods, called visual purple |
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Term
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Definition
| rhodopsin; opsin + Retinine + energy = creates impulse: Retinine converts to Vitamin A |
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Term
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Definition
| Vitamin A + ATP forms Retinine; Retinine combines w/ opsin; Becomes Rhodopsin (visual purple) |
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Term
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Definition
| entire eyelid in front of the eye is covered by a mucous membrane |
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Term
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Definition
| consists of the lacrimal gland, which secretes tears, and a series of ducts that carry tears into the nasal cavity. The gland is located in the orbit and secretes tears continuously. The tears exit through tiny tubules & flow downward @ medially across the eye. |
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Term
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Definition
| outer, funnel-like structure of the ear (auricle) |
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Term
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Definition
| S-shaped tube (external auditory canal) that leads inward through the temporal bone for about 2.5 cm. |
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Term
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Definition
| (eardrum) semitransparent membrane covered by a thin layer of skin on its outer surface and by mucous membrane on the inside; has an oval margin and is cone shaped - apex of the cone directed inward. |
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Term
| ossicles (malleus, incus, stapes) |
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Definition
| 3 small bones in the middle ear (tympanic cavity). Tiny ligaments attach them to the wall of the tympanic cavity and they are covered by mucous membrane. These bones bridge the eardrum and the inner ear, transmitting vibrations between these parts. |
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Term
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Definition
| auditory tube connecting middle ear to throat; conducts air between tympanic cavity & outside of body by way of throat @ mouth |
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Term
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Definition
| has a bony core and a thin, bony shelf that winds around the core like the threads of a screw; functions in hearing |
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Term
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Definition
| leads from the oval window to the apex of the spiral (scala vestibuli) |
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Term
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Definition
| parts of the labyrinth which provide a sense of equilibrium |
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Term
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Definition
| bony canal in the temporal bone |
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Term
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Definition
| tube that lies w/in the osseous labyrinth & has a similar shape. |
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Term
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Definition
| fluid that lies bet. the osseus and membranous labyrinths - secreted by cells in the wall of the bony canal. |
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Term
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Definition
| fluid contained in the membranous labyrinth |
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Term
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Definition
| thickest part of the middle layer, extends forward from the choroid coat and forms an internal ring around the front of the eye. |
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Term
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Definition
| groups of muscle fibers w/in the ciliary body |
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Term
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Definition
| strong but delicate fibers that extend inward from the ciliary processes and hold the transparent lens in position |
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Term
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Definition
| transparent; body lies directly behind the iris and pupil and is composed of differentiated epithelial cells called lens fibers. |
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Term
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Definition
| inner coat which contains the visual receptor cells (photoreceptors) - This nearly transparent tissue is continuous with the optic nerve in the back of the eye and extends forward as the inner lining of the eyeball. It ends just behind the margin of the ciliary body. |
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Term
Adrenal,
Ovary
Pancreas
parathyroid glands
pineal gland
pituitary gland
testis
thymus
thyroid gland
placenta |
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Definition
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