Somatosensory System 1

Question 1

Somatosensory afferent neurons project to the ____ somatosensory coretex

Answer 1

contralateral

Question 2

Where are somatosensory afferent neuron cell bodies located?

Answer 2

Dorsal root ganglia
Trigeminal cranial nerve 5

Question 3

What are the components of a pathway for somatosensory?

Answer 3

Sensory info is conveyed from the PNS to the CNS through ordered neurons. Integration occurs at tevery synapse. Decussation always occurs and the pathway terminates at the somatosensry cortex

Question 4

Describe the Dorsal Column pathway

Answer 4

Receptoes for touch, pressure, vibration, and proprioception go into the DRG and decussate at the medulla and end in the primary somatosensory coretex

Question 5

Anterlateral pathway

Answer 5

Recpetors for pain, temperature, itch, tickle decuasste at the spine and end in the primary somatosensory cortex

Question 6

What is the somatosensory cortex

Answer 6

It is the termination point for all sensory information, Recieves and process sensory information. Recieved information contralaterally. The cortical homunculus is found here

Question 7

Who created the Cortical Homunculus

Answer 7

Wilder Penfield

Question 8

Where do somatosensory afferent neurons project to?