03a: Spinal Cord

Question 1

1. Major gross anatomical features of SC
2. Major gray matter nuclei and general functions of SC gray matter
3. ID morphological basis of SC enlargements
4. Describe vascular supply of SC

Answer 1

BUMP

Question 2

Gray matter in SC is organized according to:

Answer 2

Function

Question 3

T/F: Intrinsic circuits (reflexes) don’t involve the brain.

Answer 3

True

Question 4

List layers of meninges, from inner to outer.

Answer 4

1. Pia mater
2. Arachnoid mater
3. Dura mater

Question 5

Space between (X) layers holds CSF.

Answer 5

X = pia and arachnoid

Question 6

Space after conus medularis is formally called:

Answer 6

Lumbar cistern

Question 7

(X) are extensions of (Y) that attach and anchor SC laterally to (Z).

Answer 7

X = denticulate ligaments
Y = pia mater
Z = arachnoid and dura

Question 8

Coccygeal ligament is extension of (X) that attaches to (Y).

Answer 8

X = dura 
Y = inferior end of vertebral canal

Question 9

Filum terminale is extension of (X) that attaches to (Y).

Answer 9

X = pia mater
Y = inferior end of vertebral canal

Question 10

Neurons detecting pain have cell bodies in which gray matter horn in SC?

Answer 10

Dorsal

Question 11

Neurons detecting muscle propioception send info to which gray matter horn in SC?

Answer 11

Dorsal

Question 12

Neurons detecting muscle propioception are formally called:

Answer 12

Clarke’s Nucleus

Question 13

Thoracic level lateral horn contains (X) neurons.

Answer 13

X = sympathetic preganglionic

Question 14

Sacral SC level lateral horn contains (X) neurons.

Answer 14

X = parasympathetic preganglionic

Question 15

Interneurons are present in which gray matter horn in SC?

Answer 15

Ventral

Question 16

The union of (X) arteries gives rise to (1-5) (Y) artery, which supplies (Z) part(s) of SC.

Answer 16

X = vertebral
1;
Y = anterior spinal
Z = anterior 2/3

Question 17

Branching of (X) arteries gives rise to (1-5) (Y) artery, which supplies (Z) part(s) of SC.

Answer 17

X = vertebral
2;
Y = posterior spinal
Z = posterior 1/3

Question 18

T/F: Most of SC arterial blood supply comes from spinal arteries.

Answer 18

False

Question 19

Most of SC arterial blood supply, except for (X), comes from (Y) via (Z) arteries.

Answer 19

X = upper cervical levels
Y = aorta
Z = radicular

Question 20

Anterior spinal artery is smallest at which SC segments?

Answer 20

T4-T8

Question 21

(X) supplies the inferior 2/3 of SC

Answer 21

X = Great Radicular Artery of Adamkiewicz