Chap 15 Flashcards
retina is the _____ tunic of the eyeball
nervous
a condition characterized by abnormal intraocular pressure;
glaucoma
light rays converge, reach a point at they cross. This point is called;
focal point
3 taste buds;
- fungiform papilla
- vallate papilla
- foliate papilla
3 auditory ossicles in middle ear (from tympanic membrane to the oval window);
- malleus
- incus
- stapes
_____ cells & _____ cells are continuously replaced (10 days).
- taste
- olfactory
______ is the only major sensation that relay directly to the cerebral cortex without first pass through the thalamus
olfaction (smell)
optic nerve are connect to each other at the ______. Ganglion cell axons from the nasal retina cross through this and project to the opposite side of the brain
optic chiasm
jelly-like substance found in the largest chamber of the eye;
vitreous humor
middle ear contains 3 auditory ossicles;
- malleus
- incus
- stapes
vibration pass from external to inner ear:
- tympanic membrane
- malleus
- incus
- stapes
- oval window
- perilymph
- endolymph
a substance dissolved in saliva that causes taste cells to depolarize;
tastant
inner ear structure;
- cochlea
- semicircular membrane
- vestibule
optic disk does not contain photoreceptors and does not respond to the light;
blind spot
function of sclera;
- provides a point of attachment for the eye muscles
- maintain shape of eye
- protects internal structures
avascular, transparent, allows light to enter the eye and refracts light;
cornea
regulates amount of light that enters eye by controlling the size of the pupil;
iris
transparent, biconvex structure that focuses light;
lends
converts light into action potentials;
retina
5 major tastants;
- salt
- sour
- sweet
- bitter
- glutamate (amino acids)
the sensory structure within the vestibule (Utricle & Saccule) that responds to gravity is;
macula
____ neurons are continuously replaced
olfactory
6 extrinsic eye muscles;
- superior rectus
- inferior rectus
- medial rectus
- lateral rectus
- superior oblique
- inferior oblique
3 eye chambers;
p. 513
- anterior
- posterior
- vitreous
______ membrane separates external ear from middle ear
tympanic
2 visual fields;
- temporal (lateral)
- nasal (medial)
_____ window membrane is a mechanical release for waves, and relief of pressure
round
static labyrinth involved in evaluating the position of head relative to gravity, has;
- utricle
- saccule
dynamic labyrinth is involved in evaluating ______ of the head
movement
conjunctiva
mucus membrane covering the anterior surface of the eyeball / lining the lids
vibration transfers (5 location);
- tympanic membrane
- malleus
- incus
- stapes
- oval window
function of sclera;
- maintain the shape of eyeball
- protects its structures
- attachment point for the muscles that move eye
earwax is called;
cerumen
avascular, transparent structure that permits light to enter the eye is;
cornea
vestibule and semicircular canals of bony labyrinth (inner ear) are involved in;
balance
cochlea of bony labyrinth (inner ear) functions in;
hearing
optic disk;
- retinal artery enters, and retinal vein exits the eyeball
- nerve process and exit as optic nerve
- no-photoreceptor cells= blind spot
group of smells;
- camphoraceous (strong smell)
- musky
- floral
- peppermint
- ethereal
- pungent
- putrid
location of the lens;
between posterior and vitreous chamber by suspensory ligaments
lost olfactory cells are replaced by a proliferation of ________ in the olfactory epithelium
basal cells
