Control Week 5 MCQs

Question 1

The 7th cervical nerve exits the vertebral column:

above the C7 vertebra

below the C7 vertebra

above the C8 vertebra

above the T1 vertebra

Answer 1

Above the C7 vertebra

Question 2

The cross section corresponds to which level of the spinal cord:

Answer 2

Thoracic

Question 3

The dorsal aspect of the spinal cord below T6 is characterised by how many columns?

Answer 3

2

Question 4

The region highlighted corresponds to the territory of which artery/pair of arteries?

Anterior spinal

Medullary

Posterior spinal

Vertebral

Answer 4

Posterior spinal

Question 5

The region of the spinal cord indicated by the red spot:

Contains autonomic neurons

Contains somatic motor neurons

Is present at all levels of the spinal cord

Is the substantia gelatinosa

Answer 5

Contains autonomic neurons

Question 6

The substantia gelatinosa is located in which Rexed lamiae of the spinal cord grey mater?

Answer 6

II

Question 7

The structures indicated by the black pins:

Are extensions from the arachnoid matter

Are extensions from the dura matter

Are extensions from the pia matter

Attach to the bones of the vertebral column

Answer 7

Are extensions from the pia mater

Question 8

This region of the spinal cord contains all of the following EXCEPT:

cuneate fasciculi

gracile fasciculi

lateral horns

Lissauers tract

Answer 8

Lateral horns

Question 9

What is the correct order of spinal cord sections from cranial to caudal?

Answer 9

1, 3, 2, 4

Question 10

A patient is experiencing brief, repetitive episodes of excruciating pain in the face region as a result of trigeminal neuralgia. Which region would a surgeon most likely resect in order to relieve pain in this patient?

Dorsomedial pons

Lateral aspect of lower medulla (caudal to the obex)

Substantia gelatinosa

Ventromedial aspect of midbrain

Answer 10

Lateral aspect of lower medulla (caudal to the obex)

N.B. pain = caudal spinal nucleus of trigeminal

Question 11

A patient with tertiary syphilis presented with loss of two-point discrimination and conscious proprioception from both lower limbs. Physical examination reveals normal motor testing and reflexes. Which tracts are affected?

Dorsal Columns below T8

Medial lemnisci above the rostral medulla

Spinocerebellar tracts below T8

Spinothalamic tracts below T8

Answer 11

dorsal columns below T8

Question 12

A superficial lesion of the brainstem at the level of the closed medulla would lead to which sensory deficits?

Pain and temperature from contralateral body; pain and temperature from head bilaterally

Pain and temperature from ipsilateral body; pain and temperature from head bilaterally

Pain and temperature from contralateral body; pain and temperature from head unilaterally (contralateral)

Pain and temperature from contralateral body; pain and temperature from head unilaterally (ipsilateral)

Answer 12

Pain and temperature from contralateral body; pain and temperature from head unilaterally (ipsilateral)

Question 13

Lesions in the cuneate fasciculus (1) and the gracile nucleus (2) will result in the sensory impairments of?

contralateral upper limb (1) and contralateral lower limb (2)

contralateral upper limb (1) and ipsilateral lower limb (2)

ipsilateral upper limbs (1) and contralateral lower limbs (2)

ipsilateral upper limb (1) and ipsilateral lower limb (2)

Answer 13

ipsilateral upper limb (1) and ipsilateral lower limb (2)

Question 14

Primary pain and temperature afferents from the external ear are carried by which tract:

Mesencephalic

Spinal

Spinothalamic

Trigeminothalamic

Answer 14

spinal tract

Question 15

The axons of third order neurons can also be referred to as:

association

commissural

projection

tract

Answer 15

projection