P.N.S.- Spinal Cord

Question 1

What is the anterior median fissure?

Answer 1

gap/line running down the front of the spinal cord

Question 2

What is the conus medullaris?

Answer 2

tapered inferior end of the spinal cord; “conus=cone”

Question 3

What is the cauda equina?

Answer 3

“horse’s tail”

bundle of spinal nerves and roots w/in the vert. canal which originates in the conus medullaris

Question 4

What is gray matter?

Answer 4

unmyelinated axons located in the inner portion of the spinal cord

Question 5

What is included in the gray matter?

Answer 5

ventral horn
lateral horn
dorsal horn
gray commissure
central canal

Question 6

What is a ventral horn?

Answer 6

a ventral horn is the anterior region of gray matter

Question 7

What is a lateral horn?

Answer 7

a lateral horn is towards the side (lateral) region of gray matter

Question 8

What is a dorsal horn?

Answer 8

a dorsal horn is the posterior region of gray matter

Question 9

What is the gray commissure?

Answer 9

It is the area where neurons cross over in the spinal cord; it is a horiz. band of gray matter that surrounds the central canal

Question 10

What is the central canal?

Answer 10

The central canal is a small passageway of spinal cord containing cerebrospinal fluid

Question 11

What is white matter?

Answer 11

White matter is located in the outer portion of the spinal cord consisting of myelinated axons