Chap 15

Question 1

retina is the _____ tunic of the eyeball

Answer 1

nervous

Question 2

a condition characterized by abnormal intraocular pressure;

Answer 2

glaucoma

Question 3

light rays converge, reach a point at they cross. This point is called;

Answer 3

focal point

Question 4

3 taste buds;

Answer 4

• fungiform papilla
• vallate papilla
• foliate papilla

Question 5

3 auditory ossicles in middle ear (from tympanic membrane to the oval window);

Answer 5

• malleus
• incus
• stapes

Question 6

_____ cells & _____ cells are continuously replaced (10 days).

Answer 6

• taste

- olfactory

Question 7

______ is the only major sensation that relay directly to the cerebral cortex without first pass through the thalamus

Answer 7

olfaction (smell)

Question 8

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

Answer 8

optic chiasm

Question 9

jelly-like substance found in the largest chamber of the eye;

Answer 9

vitreous humor

Question 10

middle ear contains 3 auditory ossicles;

Answer 10

• malleus
• incus
• stapes

Question 11

vibration pass from external to inner ear:

Answer 11

1. tympanic membrane
2. malleus
3. incus
4. stapes
5. oval window
6. perilymph
7. endolymph

Question 12

a substance dissolved in saliva that causes taste cells to depolarize;

Answer 12

tastant

Question 13

inner ear structure;

Answer 13

• cochlea
• semicircular membrane
• vestibule

Question 14

optic disk does not contain photoreceptors and does not respond to the light;

Answer 14

blind spot

Question 15

function of sclera;

Answer 15

• provides a point of attachment for the eye muscles
• maintain shape of eye
• protects internal structures

Question 16

avascular, transparent, allows light to enter the eye and refracts light;

Answer 16

cornea

Question 17

regulates amount of light that enters eye by controlling the size of the pupil;

Answer 17

iris

Question 18

transparent, biconvex structure that focuses light;

Answer 18

lends

Question 19

converts light into action potentials;

Answer 19

retina

Question 20

5 major tastants;

Answer 20

• salt
• sour
• sweet
• bitter
• glutamate (amino acids)

Question 21

the sensory structure within the vestibule (Utricle & Saccule) that responds to gravity is;

Answer 21

macula

Question 22

____ neurons are continuously replaced

Answer 22

olfactory

Question 23

6 extrinsic eye muscles;

Answer 23

• superior rectus
• inferior rectus
• medial rectus
• lateral rectus
• superior oblique
• inferior oblique

Question 24

3 eye chambers;

p. 513

Answer 24

• anterior
• posterior
• vitreous

Question 25

______ membrane separates external ear from middle ear

Answer 25

tympanic

Question 26

2 visual fields;

Answer 26

- temporal (lateral) | - nasal (medial)

Question 27

_____ window membrane is a mechanical release for waves, and relief of pressure

Answer 27

round

Question 28

static labyrinth involved in evaluating the position of head relative to gravity, has;

Answer 28

- utricle | - saccule

Question 29

dynamic labyrinth is involved in evaluating ______ of the head

Answer 29

movement

Question 30

conjunctiva

Answer 30

mucus membrane covering the anterior surface of the eyeball / lining the lids

Question 31

vibration transfers (5 location);

Answer 31

1. tympanic membrane 2. malleus 3. incus 4. stapes 5. oval window

Question 32

function of sclera;

Answer 32

- maintain the shape of eyeball - protects its structures - attachment point for the muscles that move eye

Question 33

earwax is called;

Answer 33

cerumen

Question 34

avascular, transparent structure that permits light to enter the eye is;

Answer 34

cornea

Question 35

vestibule and semicircular canals of bony labyrinth (inner ear) are involved in;

Answer 35

balance

Question 36

cochlea of bony labyrinth (inner ear) functions in;

Answer 36

hearing

Question 37

optic disk;

Answer 37

- retinal artery enters, and retinal vein exits the eyeball - nerve process and exit as optic nerve - no-photoreceptor cells= blind spot

Question 38

group of smells;

Answer 38

- camphoraceous (strong smell) - musky - floral - peppermint - ethereal - pungent - putrid

Question 39

location of the lens;

Answer 39

between posterior and vitreous chamber by suspensory ligaments

Question 40

lost olfactory cells are replaced by a proliferation of ________ in the olfactory epithelium

Answer 40

basal cells