Question

Many choice question (51st question, so you can think of it as bonus): If we cut the dorsal white matter in the left side of the spinal cord at the level of C5, which sensory signals would be disrupted? Those in the

Select one or more:

a. Touch from the left arm.

b. Touch from the right arm

c. Touch from the left leg

d. Touch from the right leg

e. Pain and temperature from the left arm.

f. Pain and temperature from the right arm.

g. Pain and temperature from the left leg.

h. Pain and temperature from the right leg.

Answer 1

a. Touch from left arm

f. pain and temperature from right arm

explanation: C5 spinal nerve supplies the areas of the arm.

Touch sensation is carried by the dorsal column pathway that runs ipsilaterally in the spinal cord hence there will be loss of touch on the same side

pain and temperature are carried by fibers of the spinothalamic tract that cross to opposite side within the spinal cord. Hence there would be contralateral loss of pain and temoerature