Sensory Receptors and Nerve Fibers

Question 1

Sweet, Salty, Sour, Bitter, and Umami

Answer 1

Simple carbs 
Na 
H
Alkaloids
Glutamate

Question 2

Sight

Answer 2

Sense of amount and frequency of light by retina

Photoreceptors

Question 3

Hearing

Answer 3

Sense of amplitude and frequency of vibration by cochlea

Mechano

Question 4

Taste

Answer 4

Sense of molecules or chem properties by taste buds

Chemo

Question 5

Smell

Answer 5

Sense of volatile molecules by olfactory epi

Chemo

Question 6

Touh

Answer 6

Sense of mechan forces

Mechano

Question 7

Balance

Answer 7

Sesne of orientation of the head in 3D by vesitbular apparatus

Question 8

Kinesthetic sense

Answer 8

Sense of body position in 3D by muscles and joints

Mechano

Question 9

Temperature

Answer 9

Sense of temp

THermo

Question 10

Pain

Answer 10

Sense of noxious stimuli

Nociceptors

Question 11

Encapsulated vs non

Answer 11

Non - noci

En - meissners

Question 12

Receptive fields

Answer 12

Area innervated by a single sensory receptor

Related to 2 point dsicrimination

Question 13

Receptor adaptation

Answer 13

Fast detects changes

Slow detects signal state

Question 14

Free nerve endings

Answer 14

Crude touch
Derm and epiderm
Slow
IV (C)

Question 15

Hair follicle receptor

Answer 15

Fine touch
Hair follicles in dermis of hairy skin
Rapid
3(adelta)

Question 16

Meissner’s corpuscle

Answer 16

Fine touch
Dermal papillae of glabrous skin
Rapid
2(abeta)

Question 17

Pacinian corpuscle

Answer 17

Vibration
superficial fascia
Rapid
2( abeta)

Question 18

Merkel cell

Answer 18

Pressure
Epidermis (esp lips)
Slow
2 (abeta)

Question 19

Ruffini corpuscle

Answer 19

Stretch
Dermis and superficial fascia
Slow
2(abeta)

Question 20

Primary endings

Answer 20

Annulospiral
Change in muscle length 
Nuclear bag infrafusal fibers in skeletal muscle 
Fast 
1a

Question 21

Seocndary endings

Answer 21

Flower Spray 
State of muscle length
Nuclear chain intrafusal fibers in skelatal muscle
never
2(abeta)

Question 22

Golgi tendon

Answer 22

Muscle tension (active contraction)
Tendons of skeletal muscle
Fast
1B

Question 23

Motor innervation

Answer 23

Alpha motor from CNS innervate extrafusal fibers

Gamma innervate intrafusal fibers

Question 24

Joint receptors have

Answer 24

Free endings
Ruffini
Pacinian
Golgi tendon

Question 25

Sharp pain Nociceptors

Answer 25

``` Sharp pain Through skin and other organs Fast SHarp 3 (adelta) ```

Question 26

Dull pain nociceptors

Answer 26

Slow Dull,visceral pain 4(C)

Question 27

Classes of nerve fibers

Answer 27

1a/1b - Sensory, myelin, fastest 2 - sensory, myelin, slower 3 - sensory, myelin, slower 4 - sensory unmyelin, slowest

Question 28

Groups of nerve fibers

Answer 28

``` Aalpha- motor, myelin, fastest Abeta - sensory, myelin, fast Agamma - motor, myelin, medium Adelta - sensory, myelin, slowerr C - Sensory, unmyelin, slowest ```

Question 29

Class/group overlap

Answer 29

2 and abeta 3 and a delta 4 and C