Spinal Cord

Question 1

length and weight of spinal cord

Answer 1

45 cm in adults and 30 g in adults

Question 2

how many pairs of spinal nerves

Answer 2

31

Question 3

how many cervical vertebrate

Answer 3

8

Question 4

form the cervical plexuses

Answer 4

C1-4

Question 5

cervical enlargement is located in

Answer 5

C5-T1

Question 6

first two cervical vertebrate are called

Answer 6

atlas and axis

Question 7

how many thoracic vertebrate

Answer 7

12

Question 8

lumbosacral enlargement located in

Answer 8

T11-L2

Question 9

how many lumbar vertebrate

Answer 9

5

Question 10

conus medullaris ends at

Answer 10

L1 or L2

Question 11

caudal equine

Answer 11

bundle of spinal nerves and spinal nerve rootlets, consisting of the second through fifth lumbar nerve pairs, the first through fifth sacral nerve pairs, and the coccygeal nerve, all of which arise from the lumbar enlargement and the conus medullaris of the spinal cord.

Question 12

caudal equine located in

Answer 12

cauda equina occupies the lumbar cistern, a subarachnoid space inferior to the conus medullaris.

Question 13

tapered lower end of the spinal cord

Answer 13

conus medullaris

Question 14

long filament of connective tissue attaches to the coccyx inferiorly

Answer 14

filum terminale

Question 15

cervical plexuses

Answer 15

plexus of the anterior rami of the first four cervical spinal nerves which arise from C1 to C4 cervical segment in the neck.

Question 16

brachial plexuses

Answer 16

network of nerves formed by the anterior rami of the lower four cervical nerves and first thoracic nerve (C5, C6, C7, C8, and T1). This plexus extends from the spinal cord, through the cervicoaxillary canal in the neck, over the first rib, and into the armpit

medina nerve radial nerve ulnar nerve musculcutaneous nerve

Question 17

venous drainage of spinal cord

Answer 17

arises from the inferior intercostal or upper lumbar arteries, and supplies the inferior 2/3 of the spinal cord. Venous drainage is via three anterior and three posterior spinal veins. These veins are valveless, and form an anastamosing network along the surface of the spinal cord