Touch

Question 1

skin functions

Answer 1

1. mechanical barrier
2. insulation
3. secretion of hormones
4. vitamin D synthesis
5. touch sense

Question 2

most sweat glands location

Answer 2

hands + feet

Question 3

hypothalamus relation to sweat

Answer 3

more blood in hypothalamus (exercise, high temp) = more sweating

Question 4

emotional sweating

Answer 4

from anxiety, acetylcholine activates eccrine glands

Question 5

eccrine glands function

Answer 5

producing sweat

Question 6

sebaceous gland function

Answer 6

realeases oily sebum as barrier
- too much production from hormonal problems leads to acne

Question 7

cutaneous receptors

Answer 7

1. mechanoreceptors
2. thermoreceptors
3. nocireceptors

Question 8

mechanoreceptors function

Answer 8

senses pressure, most on feet + palms

Question 9

nocirepetors

Answer 9

pain receptors

Question 10

FA I mechanoreceptor

Answer 10

rapidly adapting
small receptor field
Meissner corpuscule
- quick touches

Question 11

FA II mechanoreceptor

Answer 11

rapidly adapting
big receptor field
Pacinian corpuscule
- light touches

Question 12

SA I

Answer 12

slow adapting
small receptor field
Merkel discs - feeling of rougness

Question 13

SA II

Answer 13

slow adapting
big receptor field
Ruffini corpuscule – skin stretch

Question 14

free nerve ending detects

Answer 14

itches, touch, pressure

Question 15

discriminative touch systems

Answer 15

• glabrous skin of hand
• conveys properties

Question 16

displacement behaviour

Answer 16

touch in response to stress
- scratching head

Question 17

benefits of touch

Answer 17

• faster development
• learn faster
• better immunity
• less shy around sexual behaviour
• gene expression that reduces anxiety

Question 18

affilitative interpersonal touch

Answer 18

• gentle touches that active CT fibres
• linked to pleasant feelings

Question 19

kinesthesia

Answer 19

perception of own body movement

Question 20

thermoreceptors

Answer 20

• free, unspecialized nerve endings that react to change in temp
• adapt fast

Question 21

interoception location

Answer 21

insular cortex (lateral sulci)

Question 22

identification by touch

Answer 22

• lateral motions
• pressure
• enclosure
• contour following

Question 23

antinociception

Answer 23

blocking pain detection, opiates