Chapter 16

Question 1

Chemoreceptors

Answer 1

Detect chemicals, either molecules or ions dissolved in fluid

Question 2

modality of stimulus

Answer 2

stimulus that detects a specific stimuli

Question 3

What structure is the dividing line between posterior and anterior chambers

Answer 3

Iris

Question 4

What chamber is between the iris and conea

Answer 4

anterior chamber

Question 5

Order of structures of vascular tunic from anterior to posterior

Answer 5

Iris
Ciliary body
Choroid

Question 6

When light hits the eye, the pupil _____ in bright light

Answer 6

contracts

Question 7

Mechanoreceptors

Answer 7

respond to distortion of the plasma membrane due to touch, pressure, vibration and stretch

Question 8

Various types of mechanoreceptors include:

Answer 8

Baroreceptors, proprioceptors, tactile receptors, and other specialized cells

Question 9

Baroreceptors

Answer 9

a type of mechanoreceptor, stimulated by changes in stretch or distension within wall of body structures.

Question 10

Tactile receptors

Answer 10

Most numerous type of sensory receptor, they are mechanoreceptors located in skin and mucous membranes

Question 11

Encapsulated tactile receptors

Answer 11

terminal endings of sensory neurons with no protective covering. There are 3 types

Question 12

Referred pain occurs

Answer 12

when sensory nerve signals from certain viscera are perceived as originating not from the organ, but somatic sensory receptors of the skin and skeletal muscle.

Question 13

Oderants

Answer 13

must be dissolved in the mucous in our nasal cavity to be detected by chemoreceptors

Question 14

What are the functions of the auditory ossicles

Answer 14

amplify sound and transmit sound waves to inner ear

Question 15

The external acoustic meatus terminates the _____ _____

Answer 15

tympanic membrane, most commonly known as the eardrum

Question 16

Where are the photoreceptors located

Answer 16

in the neural part of the retina

Question 17

sensory receptors in which of the following structures help monitor and adjust equilibrium

Answer 17

saccule, semicircular ducts, and the utricle

Question 18

Through which cranial nerves do gustatory information travel

Answer 18

IX, VII

Question 19

Lack of photoreceptors in this structure creates a blind spot

Answer 19

optic disc

Question 20

Place the layers of the eye in order from superficial to deep

Answer 20

Fibrous tunic, vascular layer, retina

Question 21

Hearing and our sense of balance comes from the stimulation of which cranial nerve

Answer 21

vestibulocochlear

Question 22

The lacrimal gland has a superior or _______ part and an inferior or _______ part.

Answer 22

orbital and palpebral

Question 23

Emmetropia

Answer 23

a condition of normal vision, parallel rays of light are focused exactly on the retina

Question 24

Hyperopia

Answer 24

farsighted, trouble seeing close up objects. Eyeball too short

Question 25

Myopia

Answer 25

nearsighted, trouble seeing far away objects. Eyeball too long.

Question 26

Optic tracts extend to which of the following, after leaving the optic chaiasm

Answer 26

lateral geniculate nucleus of thalamus, and superior colliculi

Question 27

Order these structures from superficial to deep | choroid, sclera, neural layer, pigmented layer

Answer 27

Sclera, choroid, pigmented layer of retina, neural layer of retina

Question 28

Which events occur during bright light adaptation

Answer 28

pupils constrict, cones gradually adjust, rods become inactive

Question 29

What color is the macula lutea

Answer 29

Yellow

Question 30

Place the structures in order from superficial to deep | photoreceptors, horizontal cells, bipolar cells, choriod

Answer 30

choroid, photoreceptors, horizontal cells, bipolar cells

Question 31

A detached retina occurs when the

Answer 31

outer pigmented and inner neural layer layers of the retina separate

Question 32

Where are tears created

Answer 32

lacrimal apparatus

Question 33

The sphincter papillae ______ the pupil

Answer 33

constricts. (contracts and the pupil becomes smaller)

Question 34

Which of the following structures contain exteroreceptrors

Answer 34

skin and oral cavity