Most Recently Asked Nero Anatomy Quiz Type Questions And Answers

31. The subclavian artery gives rise directly to the–
A. lumbar radicular artery
B. great ventral radicular artery
C. anterior spinal artery
D. vertebral artery
The correct answer is D

32. The dorsal nucleus (of Clarke) in the spinal cord–
A. receives contralateral input from dorsal root ganglia
B. terminates at the L2 segment
C. terminates in the midbrain
D. terminates in the ipsilateral cerebellum
E. receives fibers from the external cuneate nucleus
The correct answer is D

33. The following rules about dermatomes are correct–
1. the C4 and T2 dermatomes are contiguous over the anterior trunk
2. the nipple is at the level of C8
3. the thumb, middle finger, and 5th digit are within the C6, C7, and C8 dermatomes, respectively
4. the umbilicus is at the level of L2
One or more answers may be correct. Select–
A. if 1, 2, and 3 are correct
B. if 1 and 3 are correct
C. if 2 and 4 are correct
D. if only 4 is correct
E. if all are correct
The correct answer is B

34. The spinal subarachnoid space normally–
A. lies between the pachymeninx and the arachnoid
B. lies between the pia and the arachnoid
C. ends at the cauda equina
D. communicates with the peritoneal space
E. is adjacent to the vertebrae
The correct answer is B

35. A-delta and C peripheral afferent fibers–
1. terminate in laminas I and II of the dorsal horn
2. convey the sensation of pain
3. terminate in lamina V of the dorsal horn
4. convey the sensation of light touch
One or more answers may be correct. Select–
A. if 1, 2, and 3 are correct
B. if 1 and 3 are correct
C. if 2 and 4 are correct
D. if only 4 is correct
E. if all are correct
The correct answer is A

36. In humans, the spinothalamic tract–
1. carries information from the ipsilateral side of the body
2. exhibits topographic organization
3. arises principally from neurons of the same side of the cord
4. mediates information about pain and temperature
One or more answers may be correct. Select–
A. if 1, 2, and 3 are correct
B. if 1 and 3 are correct
C. if 2 and 4 are correct
D. if only 4 is correct
E. if all are correct
The answer is C.

37. The following are correct–
1. the diaphragm is innervated via the C3 and C4 roots
2. the deltoid and triceps are innervated via the C5 root
3. the biceps are innervated via the C5 root
4. the gastrocnemius is innervated via the L4 root
One or more answers may be correct. Select–
A. if 1, 2, and 3 are correct
B. if 1 and 3 are correct
C. if 2 and 4 are correct
D. if only 4 is correct
E. if all are correct
The answer is B.

38. The dorsal spinocerebellar tract–
1. arises in the dorsal nucleus of Clarke and, above C8, in the accessory cuneate nucleus
2. carries information arising in the muscle spindles, Golgi tendon organs, touch and pressure receptors
3. ascends to terminate in the cerebellar cortex
4. projects without synapses to the basal ganglia and cerebellum
One or more answers may be correct. Select–
A. if 1, 2, and 3 are correct
B. if 1 and 3 are correct
C. if 2 and 4 are correct
D. if only 4 is correct
E. if all are correct
The answer is A.

39. The long-term consequences of a left hemisection of the spinal cord at midthoracic level would include–
1. loss of voluntary movement of the left leg
2. loss of pain and temperature sensation in the right leg
3. diminished position and vibration sense in the left leg
4. diminished deep tendon reflexes in the left leg
One or more answers may be correct. Select–
A. if 1, 2, and 3 are correct
B. if 1 and 3 are correct
C. if 2 and 4 are correct
D. if only 4 is correct
E. if all are correct
The answer is A.

40. Gamma-efferent motor neurons–
1. are located in the intermedial lateral cell column of the spinal cord
2. cause contraction of intrafusal muscle fibers
3. provide vasomotor control to blood vessels in muscles
4. are modulated by axons in the vestibulospinal tract
One or more answers may be correct. Select–
A. if 1, 2, and 3 are correct
B. if 1 and 3 are correct
C. if 2 and 4 are correct
D. if only 4 is correct
E. if all are correct
The answer is C.

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