#07

Question 1

In a transverse
section through the spinal cord, the amount of gray matter is greatest in those segments
innervating the a
The amount of white matter is greatest in the most b

Answer 1

a: upper and lower limbs
b: rostral segments of the spinal cord and decreases as one moves causally down the spinal cord

Question 2

A supplies the ventral horn and intermediate gray area,
plus the ventral and lateral funiculi bilaterally, as well as the ventral white commissure

Answer 2

a: The anterior spinal artery (ASA)

Question 3

A supply most of the dorsal horn and dorsal funiculus
(dorsal column) unilaterally

Answer 3

The posterior spinal arteries (PSA)

Question 4

The fibers of cranial nerve V, the trigeminal nerve, pass directly through the middle
cerebellar peduncle (MCP) on section

Answer 4

6

Question 5

Section 1 is most known for

Answer 5

motor decussation

Question 6

Section 2 is most known for

Answer 6

sensory decussation

Question 7

Inferior cerebellar peduncle (ICP), a major white matter bundle leading into cerebellum, begins at

Answer 7

Section 3

Question 8

Middle cerebellar peduncle (MCP) begins at

Answer 8

section 5

Question 9

blood supply of section 1

Answer 9

ASA, vertebral, PSA

Question 10

blood supply of section 2

Answer 10

ASA, vertebral, PICA, PSA

Question 11

blood supply of section 3

Answer 11

ASA, vertebral, PICA

Question 12

blood supply of section 4

Answer 12

vertebral, PICA, AICA

Question 13

blood supply of section 5

Answer 13

basilar, AICA

Question 14

blood supply of section 6

Answer 14

basilar, AICA, SCA

Question 15

blood supply of section 7

Answer 15

basilar, SCA