Somatosensory pathways

Question 1

Where do axons from receptors enter, and from where?

Answer 1

Axons from receptors enter the spinal cord through the dorsal root of spinal nerves

Question 2

Axons from receptors of___and___go through_____

Answer 2

• axons from receptors of face and head go through trigeminal nerve (cranial nerve 5)

Question 3

Fine touch and kinesthesia: Where does it start or ascend from?

Answer 3

Ascend in dorsal columns of spinal cord

Question 4

Fine touch and kinesthesia: From dorsal columns of spinal cord to

Answer 4

nuclei in medulla

Question 5

Fine touch and kinesthesia: from nuclei in medulla to

Answer 5

cross to other side

Question 6

Fine touch and kinesthesia: after crossing to the other side

Answer 6

ventral posterior thalamus

Question 7

Fine touch and kinesthesia: From ventral posterior thalamus

Answer 7

to primary somatosensory cortex

Question 8

Fine touch and kinesthesia: from primary somatosensory cortex to

Answer 8

association somatosensory cortex

Question 9

Pain and temperature: Start

Answer 9

Synapse and cross immediately after entering spinal cord; provides sensory input for reflexes

Question 10

Pain and temperature: From synapse crossing after entering spinal cord to

Answer 10

ascend in spinothalaic tract of spinal cord

Question 11

Pain and temperature: ascend in spinothalaic tract of spinal cord to

Answer 11

ventral posterior thalamus

Question 12

Pain and temperature: from ventral posterior thalamus to

Answer 12

primary somatosensory cortex

Question 13

Pain and temperature: primary somatosensory cortex to

Answer 13

association somatosensory cortex