Exam 3 Part 6

Question 1

Receptors

Answer 1

exteroceptor, interoceptors, proprioceptors, photoreceptors, mechanoreceptors, thermoreceptors, chemoreceptors, nociceptors, baroreceptors

Question 2

exteroceptors

Answer 2

pick up stimuli from outside body (taste, vision, smell etc)

Question 3

interoceptors

Answer 3

inside -monitor conditions inside

Question 4

proprioceptors

Answer 4

sense body position-monitor status of muscle contraction

Question 5

photorecptors

Answer 5

light, color, intensity, movement tracking

Question 6

mechanoreceptors

Answer 6

at body surface (cutanous), pain, pressure, touch

Question 7

thermoreceptors

Answer 7

hot and cold

Question 8

chemoreceptors

Answer 8

olfactory, gustatory, body fluids (o2, pH)

Question 9

baroreceptors

Answer 9

deep - pressure

Question 10

nociceptors

Answer 10

pain

Question 11

referred pain

Answer 11

perceived cutaneously, originates viscerally

Question 12

phantom pain

Answer 12

perceived in an amputated body part

Question 13

eyes

Answer 13

in eye socket (orbit) 7 cranial bones

Question 14

eyelid

Answer 14

palpebrae

Question 15

conjuctiva

Answer 15

stratified squamous ET
3 continous layers 
-interior surface of eyelid
-exterior, anterior surface of eye
secretes mucin (lubricant)

Question 16

lacrimal apparatus

Answer 16

lacrimal glands, fluid, caruncle

Question 17

lacrima

Answer 17

tear

Question 18

proprio

Answer 18

one’s own

Question 19

noci

Answer 19

pain

Question 20

Lysozyme

Answer 20

enzyme in lacrimal fluid

helps break down bacteria

Question 21

layers of eye

Answer 21

tunica

1. outer (fibrous tunic)
2. Middle (vascular tunic) uvea
3. inner - nueral tunic -retina

Question 22

tunic

Answer 22

layer

Question 23

scleros

Answer 23

heard?

Question 24

fibrous tunic

Answer 24

outer layer; gives shape to eyeball, avascular
-anterior portion-cornea; curved, transparent transmits/refracts light (bends)
-posterior portion - sclera opaque “white” of eye
muscles that move eye are attached

Question 25

vascular tunic

Answer 25

middle layer

• posterior -choroid
• ciliary body-smooth muscle (affects lens shape)
• anterior-iris pigmented; in center is hole-pupil

Question 26

neural tunic

Answer 26

inner layer-retina

neurons for photoreception (rods, cones, etc)

Question 27

rete

Answer 27

net

Question 28

Lens

Answer 28

changes shape and focuses light on retina protein called crystallin

Question 29

cavities

Answer 29

maintain shape of eye, support structures

• anterior cavity -bt lens and cornea; aqueous humor (watery fluid)
• poserior cavity -bt lens and retina; vitreous humor (gel-like)

Question 30

ear

Answer 30

external/outer ear; auricle (pinna)
skin and elastic cartilage
external acoustic/auditory canal extends to tympanic membrane (eardrum)
skin contains fine hairs and sebaceous glands; deeper are ceruminous glands

Question 31

Middle ear

Answer 31

air filled tympanic cavity, sort, bony
3 bones called auditory ossicles; malleus, incus, stapes
opens to nasopharynx via auditory/Eustrachian tube)
equalizes pressure

Question 32

inner ear

Answer 32

bony labrinth (w/in petrous portion of temporal bone), fluid filled

• vestibule - middle portion, connects to stapes; balance
• semicircular canals-posterior to vestible; balance
• cochlea-coiled chamber, spiral organ -hearing

Question 33

CNVIII

Answer 33

vestibular branch -inpur from vestible and semicircular canals
chochlear branch -input rom choclea

Question 34

CNVII

Answer 34

also near ear-facial nerve