The Senses

Question 1

2 general function of the senses

Answer 1

1. obtain info from environment

2. help you survive

Question 2

2 general structures of the senses

Answer 2

1. specialized sense organs- act as transducers (transforms energy)
2. sense receptors

Question 3

5 types of sense receptors

Answer 3

1. photoreceptors - detect light - eyes
2. chemoreceptors - detect chemicals - tongue, nose
3. thermoreceptors - detect heat, cold - skin
4. mechanoreceptors - detect pressure - skin
5. pain receptors - detect pain

Question 4

2 types of human vision

Answer 4

1. binocular vision - 2 eyes

2. stereoscopic vision - see 3D

Question 5

eyeball diameter

Answer 5

1 inch

Question 6

3 layers of wall of the eye

Answer 6

1. sclera- outer
2. choroid- middle
3. retina- inner

Question 7

part of eye under sclera

Answer 7

cornea - transparent front bulge

Question 8

part of eye under choroid

Answer 8

iris - pigment gives eye color, muscles regulate pupil

Question 9

3 parts of retina

Answer 9

1. photoreceptors
2. fovea
3. optic disc

Question 10

2 types of photoreceptors

Answer 10

1. cones- bright light, colors

2. rods- dim light, shadows

Question 11

describe fovea

Answer 11

sharpest point on retina, all cones, no rods

Question 12

describe optic disc

Answer 12

1. blind spot, no rods or cones

2. entry of optic nerve

Question 13

3 parts of the interior structure of eye

Answer 13

1. aqueous humor -fluid between cornea and lens
2. vitreous humor - fluid behind lens
3. lens- behind pupil

Question 14

muscles that change the curvature of eye lens are called..

Answer 14

CILIARY muscles

Question 15

define conjuctiva

Answer 15

membrane covering sclera and inner eyelid; secretes mucus for eye lubrication

Question 16

define lacrimal glands

Answer 16

produce tears to wash, moisten eye

Question 17

number of muscles that move the eye

Answer 17

SIX

Question 18

7 steps to the pathway of light rays

Answer 18

1. cornea
2. aqueous humor
3. pupil
4. lens
5. vitreous humor
6. retina
7. optic nerve to the brain

Question 19

2 functions of the ear

Answer 19

1. hearing

2. balance

Question 20

3 parts of the ear

Answer 20

1. outer
2. middle
3. inner

Question 21

3 parts of the outer ear

Answer 21

1. pinna - external cartilage flap
2. auditory canal - secretes cerumen or earwax
3. tympanum - eardrum

Question 22

4 parts of the middle ear

Answer 22

1. tympanic cavity
2. eustachian tube
3. bones of middle ear - malleus, incus, stapes
4. oval window

Question 23

3 parts of the inner ear

Answer 23

1. cochlea
2. semicircular canals
3. vestibule

Question 24

function of cochlea

Answer 24

contains sensory receptor for sound

Question 25

function of semicircular canals

Answer 25

contains sensory receptor for balance

Question 26

sections of vestibule

Answer 26

1. saccule | 2. utricle

Question 27

8 steps to pathway of sound vibration

Answer 27

1. auditory canal 2. tympanum 3. malleus 4. incus 5. stapes 6. oval window 7. cochlea 8. auditory nerve to the brain

Question 28

type of receptors in the nose

Answer 28

olfactory receptors embedded in the mucous membrane

Question 29

nerve in nose that carries impulse to brain

Answer 29

olfactory nerve

Question 30

type of receptors in tongue

Answer 30

chemoreceptors

Question 31

location of chemoreceptors in tongue

Answer 31

taste buds

Question 32

opening in taste buds is called..

Answer 32

taste PORE

Question 33

cluster of taste buds visible as tongue bumps is...

Answer 33

PAPILLAE

Question 34

4 taste sensations

Answer 34

1. sweet 2. sour 3. salty 4. bitter

Question 35

sense that influences taste

Answer 35

smell

Question 36

5 distinct sense receptors of skin

Answer 36

1. touch 2. pressure 3. pain 4. heat 5. cold