Exam 3 Part 6 Flashcards Preview

Biology 150 > Exam 3 Part 6 > Flashcards

Flashcards in Exam 3 Part 6 Deck (34):
1

Receptors

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

2

exteroceptors

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

3

interoceptors

inside -monitor conditions inside

4

proprioceptors

sense body position-monitor status of muscle contraction

5

photorecptors

light, color, intensity, movement tracking

6

mechanoreceptors

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

7

thermoreceptors

hot and cold

8

chemoreceptors

olfactory, gustatory, body fluids (o2, pH)

9

baroreceptors

deep - pressure

10

nociceptors

pain

11

referred pain

perceived cutaneously, originates viscerally

12

phantom pain

perceived in an amputated body part

13

eyes

in eye socket (orbit) 7 cranial bones

14

eyelid

palpebrae

15

conjuctiva

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

16

lacrimal apparatus

lacrimal glands, fluid, caruncle

17

lacrima

tear

18

proprio

one's own

19

noci

pain

20

Lysozyme

enzyme in lacrimal fluid
helps break down bacteria

21

layers of eye

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

22

tunic

layer

23

scleros

heard?

24

fibrous tunic

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

25

vascular tunic

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

26

neural tunic

inner layer-retina
neurons for photoreception (rods, cones, etc)

27

rete

net

28

Lens

changes shape and focuses light on retina protein called crystallin

29

cavities

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)

30

ear

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

31

Middle ear

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

32

inner ear

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

33

CNVIII

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

34

CNVII

also near ear-facial nerve