exam 10

Question 1

what are the structures of the eye? 10

Answer 1

1. cornea (helps focus light)
2. aqueous humor
3. lens (focus light on retina)
4. iris (colored part of eye)
5. pupil (allows light to enter eye)
6. retina
7. optic nerve
8. sclera
9. vitreous humor (helps maintain eye shape)
10. choroid

Question 2

where are the blood vessels located?

Answer 2

choroid layer of eye part of uvea

Question 3

which nerves transmit the senses? 5

Answer 3

1. optic nerve-vision
2. vestibulocochlear nerve-hearing and balance
3. olfactory nerve- smell
4. facial nerve/glossopharyngeal nerve- taste
5. variety of somatosensory nerves- touvh

Question 4

what are the papillae of the tongue? +location 4

Answer 4

1. filiform (located all over tongue) no tastebuds
2. fungiform (tip and sides of tongue) tastebuds
3. foliate (located on sides of tongue) tastebuds
4. circumvallate (back of tongue in V arrangement)

Question 5

which papillae has the most tastebuds?

Answer 5

circumvallate

Question 6

what is strabismus?

Answer 6

its a condition in which eyes don’t properly align with each other when looking at an object

Question 7

what’s another name for tactile meniscus/

Answer 7

Merkel disc

Question 8

where are your taste buds?

Answer 8

they are located on the tongue, soft palate, inner cheeks, and roof of the mouth

Question 9

what are the areas of taste?

Answer 9

sweet, salty, bitter, umami, sour

Question 10

what are auditory ossicles?

Answer 10

three tiny bones in the middle ear called the malleus, incus, and stapes

Question 11

what are the parts of the ear?

Answer 11

1. Outer ear
2. Middle ear
3. Inner ear

Question 12

what’s in the outer, inner, and middle ear?

Answer 12

outer- pinna and external auditory canal
middle- tympanic membrane
inner- cochlea, vestibule, semicircular canals

Question 13

what are somatic senses? What do they do?

Answer 13

they are senses that detect touch, pain, pressure, temp, and proprioception

Question 14

to produce a clear image what does the aqueous humor do?

Answer 14

it helps to maintain intraocular pressure, provides nutrients to avascular ocular tissues and removes metabolic wastes

Question 15

where are viscerorecptors located?

Answer 15

in the internal organs

Question 16

what’s the difference between nearsightedness and farsightedness?

Answer 16

• nearsighted is difficulty seeing distant objects clearly
• farsighted is difficulty seeing close objects clearly

Question 17

what are the primary photo pigments? 2

Answer 17

1. rhodopsin in rods
2. photospins in cones
   (red, green, and blue)

Question 18

what is receptor potential? describe characteristics and how it works?

Answer 18

graded change in membrane potential in a sensory receptors cell in respo0nse to a stimulus. It can lead to the generation of action potentials if the stimulus is strong enough, allowing the sensory information to be transmitted to the nervous system