exam one (touch and pain)

Question 1

perceive fine touch and pressure and identify objects we touch, activated by mechanical stimulation

Answer 1

hapsis

Question 2

perception of pain, temperature, and itch

Answer 2

nociception

Question 3

perception of the location and movement of the body

Answer 3

proprioception

Question 4

what receptors are sensitive to physical distortion

Answer 4

mechanoreceptors

Question 5

body sensory receptor that responds briefly to the beginning and end of a stimulus on the body

Answer 5

rapidly adapting receptor

Question 6

body sensory receptor that responds as long as a sensory stimulus is on the body

Answer 6

slowly adapting receptor

Question 7

nocioception is slow or fast

Answer 7

slow

Question 8

proprioception is slow or fast

Answer 8

fast

Question 9

what mechanoreceptors are in the epidermis

Answer 9

meissners and merkels

Question 10

what mechanoreceptors are in the dermis

Answer 10

pacinian and ruffinis

Question 11

what mechanoreceptors are rapid

Answer 11

meissners and pacinian

Question 12

what mechanoreceptors are slow

Answer 12

merkels and ruffini

Question 13

what mechanoreceptors have a large receptive field

Answer 13

pacinian and ruffini

Question 14

what mechanoreceptors have a small receptive field

Answer 14

meissners and merkels

Question 15

the pacinian corpuscle has a ____ around its axon which allows a rapid adaptation

Answer 15

capsule

Question 16

what corpuscles are encapsulated

Answer 16

meissners, ruffini, pacinian

Question 17

all mechanoreceptors in the skin are ____

Answer 17

unmyelinated

Question 18

the mechanoreceptor ion channels are opened by ___

Answer 18

force

Question 19

where is the greatest mechanoreceptor density

Answer 19

fingertips

Question 20

what are the four types of primary afferent axons

Answer 20

Aa, Ab, Ad. C

Question 21

what is the fastest afferent axon

Answer 21

Aa (it is more myelinated and larger in diameter)

Question 22

myelinated Ab axons are ___ ____ and branch in dorsal column

Answer 22

touch-sensitive

Question 23

myelinated sensory axons ascend the dorsal column to where; what is this pathway called?

Answer 23

dorsal column nuclei (medulla), VP nucleus (thalamus), S1 (parietal lobe); medial lemniscal pathway

Question 24

where does somatosensory information from the face come from (does not pass through the spinal column

Answer 24

trigeminal

Question 25

where does the myelinated Ab axon cross over

Answer 25

medulla ( medial lemniscus)

Question 26

located on the post central gyrus of the pareital lobe or area 3b are known as

Answer 26

primary somatosensory cortex

Question 27

immediately adjacent to area 3b is an area that processes texture, what is it?

Answer 27

area 1

Question 28

immediately adjacent to area 3b is an area that processes size and shape, what is it?

Answer 28

area 2

Question 29

immediately adjacent to area 3b is an area that processes afferent info about body position, what is it?

Answer 29

area 3a

Question 30

inputs from the VP nucleus of the thalamus go to layer ___ of the somatosensory cortex

Answer 30

IV

Question 31

damage to the somatosensory cortex plays does not disrupt plans for making movements but instesad it disrupts

Answer 31

how and if the movements have been performed

Question 32

area __ and __ are involved in complex somatosensory processing, they work to process somatic sensation, visual stimuli, and planning

Answer 32

5 and 7

Question 32

what is the path of trigeminal nerve

Answer 32

principal sensory trigeminal nucleus, crosses over at thalamus (VP nucleus) and goes to specific spot of S1