Touch

Question 1

What is the function somatosensory system

Answer 1

Provide info about touch and pain from the body

Question 2

What are the 3 exteroceptions?

Answer 2

1. Mechanoreception
2. Thermoreception
3. Nocireception

Question 3

Where are somatic senses detected by?

Answer 3

The receptors from the endings of nerve fibres

Question 4

Somatic nerve fibres are classified by:

Answer 4

1. The axon diameters
2. Their absense/presence of myelin
3. The type of info they transmit

Question 5

Sensory neuon: Aa

Answer 5

13-20 micrometers in diameter
80-120 m/s conduction
Proprioception in skeletal muscle

Question 6

Sensory neuron Ab

Answer 6

6-12 micrometers in diameter
35-75 m/s conduction
Skin mechanoreceptors

Question 7

Sensory neuron: Ad

Answer 7

1-5 micrometers in diameter
5-30 m/s conduction
Fast pain and cold temps

Question 8

Sensory neuron: C

Answer 8

0.2-1.5 micrometers in diameter
0.5-2 m/s conduction
Dull pain, hot pain, itch

Question 9

4 Cutaneous mechanoreceptors in the skin:

Answer 9

1. Meissner’s corpuscles
2. Merkel’s disks
3. Pacinian corpuscles
4. Hair follicle receptors (hair on skin)

Question 10

Adaptive rate function

Answer 10

Determines if stimulus is changing and how fast it is doing so

Question 11

Receptive field sites function

Answer 11

Identify where the stimulus is happening on your skin

Question 12

What is Form Perception?

Answer 12

Identifying the form or shape of the object by touch

Question 13

What is Texture perception?

Answer 13

Discriminate the smoothness and roughness of an object

Question 14

What is Vibration perception?

Answer 14

Distinguishing fluttering and vibration of object on your skin.