Laboratory 2

Question 0

What side of the body experiences paralysis when the descending tract is unilaterally damaged?

Answer 0

The opposite side ( pyramidal decussation)

Question 1

What neurons control movement via the lateral corticospinal tract which regulates motor neurons of spinal cord ventral horn gray matter?

Answer 1

Neurons of the precentral gyrus

Question 2

A lesion below the caudal medulla would result in sensory loss on which side of the body?

Answer 2

Ipsilateral

Question 3

A lesion above the caudal medulla would result in sensory loss on which part of the body?

Answer 3

Contralateral

Question 4

What type of stimuli originates in the dorsal horns near their level of entry and then crosses over via secondary fibers to ascend in the ventrolateral white column on the side opposite the stimulus?

Answer 4

Pain stimuli

Question 5

What tract descends in the dorsal part of the lateral funicilus?

Answer 5

Lateral corticospinal tract

Question 6

What tract is situated in the ventral part of the lateral funicilus?

Answer 6

Lateral spinothalamic tract

Question 7

What tract lies in the dorsal part of the lateral funiculus lateral to the lateral corticospinal tract?

Answer 7

Posterior spinocerebellar tract