Anatomy test chapter 8
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40 terms
Terms | Definitions |
|---|---|
 eyeball | hallow sphere composed of three coats (tunics) and filled with fluids (humors) |
| lens | what is the main focusing apparatus of the eye? |
| sclera choroid retina | what are the three tunics of the eye? |
| sclera | white of the eye |
| cornea | allows light to enter the eye and is the most exposed part of the eye |
| cornea | the only tissue in the body that can be transplanted from person to person without rejection |
| choroid | contains a dark pigment which prevents light from scattering within the eye (iris) |
| choroid | pupil will dilate depending on the amount of light that is entering |
| dim | the pupil enlarges when the lights are___ (distance) |
| bright | the pupil constricts when the lights are___ (close) |
| photoreceptors | the retina contains millions of rods/cones which are called ____ because they respond to light |
| rods | allow us to see in gray tones (dim light) and provide peripheral vision |
| maculae | help with our sense of static equilibrium |
| maculae | helps keep our head erect |
| otoliths | roll in response to changes in the pull of gravity |
| vestibular nerves | send impulses to the cerebellum informing it of the position of the head |
| dynamic equilibrium | responds to angular/rotary movements of the head |
| crista ampullaris | the reversed motion sensation one experiences after spinning and is generated by the capula and vestibular nerve |
| propioreceptors tendons | besides the semicircular canals and the vestibules, what also helps contribute to balance |
| auditory receptors | adapt or quit responding to sounds that are constant |
| hearing | what is the last sense to leave our awareness (sleeping, anethesia, death) |
| deafness | hearing loss of any degree |
| conduction deafness | interfearance of sound vibrations (earwax buildup, fusion of ossicles, ruptured eardrum, otitis media) |
| sensorineural deafness | damage to receptor cells (caused by listening to loud music) |
| hearing aid | what is the treatment for sensorineural deafness? |
| equilibrium | nausea, dizziness, balance, jerky movements are symptoms of ____ problems |
| menieres syndrome | serious pathology of the inner ear |
| chemoreceptors | classification for taste and smell receptors |
| over 10000 | how many taste buds are there |
| palate, cheeks, tongue | where are taste buds located |
| papillae | small peg like projections on tongues surface |
| gustatory cells | cels that respond to chemicals found in saliva |
| sweet sour bitter salty | what are the 4 basic taste sensations |
| umami | what is the one special taste sensation |
| strabismus | unequal pull of the external eye muscles (cross eyed) |
| rubella | may lead to blindness or cataracts |
| gonorrhea | babys eyes are infeted by the bacteria during pregnancy (STD) |
| conjunctivitis | babys eye lids become red and swollen, puss is produced |
| presbycusis | atrophy of the organ corti |
| 50 | what percent of 80 year olds cannot smell at all |
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