Somatic system

Question 1

Somatosensory signals are generated by?

Answer 1

pseudounipolar neurons in the peripheral nervous system

Question 2

Dermatome

Answer 2

is an area of skin whose sensory nerves all come from a single spinal nerve root.

Question 3

Sensory nerves

Answer 3

carry information about such things as touch, pain, temperature, and vibration from the skin to the spinal cord

Question 4

Stretching of the cell membrane

Answer 4

leads to cation influx through mechanosensitive channels, which gives rise to mechanotransduction33333333

Question 5

Joint receptors, muscle spindles, and Golgi tendon organs

Answer 5

mediate proprioception (sense of position, and movement of body parts).

Question 6

Tactile signals from the body, and face are transmitted to?

Answer 6

to the forebrain through dorsal column –medial lemniscus pathway, and trigeminal lemniscus, respectively.

Question 7

In the forebrain, somatosensory signals are first processed by?

Answer 7

the ventral posterior nucleus, then by the postcentral gyrus, and posterior parietal cortex.

Question 8

Secondary somatosensory cortex, and posterior parietal cortex receive somatosensory signals from ?

Answer 8

the primary somatosensory cortex, and project to the medial temporal lobe, and motor areas.

Question 9

Somatosensory maps are modified by ?

Answer 9

sensory experience