Spinal Cord in depth

Question 1

The spinal cord is a long tube of what?

Answer 1

Nervous tissue

Question 2

The gray matter of the spinal cord contains what?

What does it look like?

Answer 2

Neuron cell bodies

A butterfly

Question 3

The white matter surrounds the ___ and contains what?

Answer 3

The butterfly

Neuron cell bodies

Question 4

Axons are surrounded by a white substance called what?

Answer 4

Myelin

Question 5

The ventral root contains ____neurons

Answer 5

Motor

Question 6

The dorsal root contains ____ neurons

Answer 6

Sensory

Question 7

Dorsal root fibers join ventral root fibers to form what?

Answer 7

A spinal nerve

Question 8

Ventral roots carry ______ from the spinal cord to _____

Answer 8

motor information

to muscle

Question 9

Dorsal roots carry sensory information from _____ to ______

Answer 9

the body

the spinal cord

Question 10

Dorsal Primary rami innervate what?

They carry sensory information from ____ to ____

Answer 10

Skin of dorsum of body

Skin of back to spinal cord

Question 11

Dorsal primary rami also carry _____ neurons to the deep muscles of the back

Answer 11

motor

Question 12

The medial branch of DPR innervates dorsal skin from ___ to ___

Answer 12

C2- T6

Question 13

The lateral branch of DPR innervates dorsal skin from ____ to ____

Answer 13

T7- Sacrum

Question 14

Ventral primary rami receives 90% of ________

Answer 14

cutaneous sensory info

Question 15

Cervical, lumbar, and sacral ventral primary rami join within their group to form a bundle aka a _____

Answer 15

plexus

Question 16

Thoracic ventral primary rami stay ____ and have a rounded pathway around the wall of the body cavity.

Answer 16

separate

Question 17

Just before the forming of the spinal nerve, the dorsal root has a a ganglion?

Answer 17

dorsal root ganglion

Question 18

The ventral primary rami branches into which two nerves?

Answer 18

lateral cutaneous and anterior cutaneous nerve

Question 19

Lateral cutaneous goes into the superficial fascia and innervates what body surfaces?

Answer 19

lateral, dorsal and inferior

Question 20

Anterior cutaneous nerve goes into the superficial fascia and innervates the skin what area?

Answer 20

front midline

Question 21

Spinal nerves and DRG are at level of what?

Answer 21

intervertebral foramen

Question 22

The cervical plexus includes nerves from which vertebrae?

Answer 22

C1-C4

Question 23

The brachial plexus has nerves from which vertebrae?

Answer 23

C5-T1

Question 24

There is only __ pair of coccygeal nerves

Answer 24

1