spinal cord

Question 1

What are the 4 parts of the spinal cord?

Answer 1

Cervical, thoracic, lumbar, and sacral

Question 2

What is cauda equina?

Answer 2

Spinal nerve roots extend inferiorly from the end of the spinal cord

Question 3

What is cervical enlargement?

Answer 3

Neurons innervating upper limbs

Question 4

What is lumbar enlargement?

Answer 4

Neurons innervating lower limbs

Question 5

What is a nerve?

Answer 5

Bundle of axons inside PNS

Question 6

What does posterior root contain?

Answer 6

Sensory neurons

Question 7

What does posterior root ganglion contain?

Answer 7

Cell bodies of these neurons

Question 8

What does anterior root contain?

Answer 8

Motor neurons

Question 9

What is vertebral column?

Answer 9

Houses the spinal cord

Question 10

What is the intervertebral foramen?

Answer 10

Each spinal nerve exits through this.

Question 11

What are the 3 spinal cord meninges?

Answer 11

Pia mater, arachnoid mater, and dura mater

Question 12

What is pia mater?

Answer 12

Delicate layer adhering to spinal cord

Question 13

What is arachnoid mater?

Answer 13

Web-like layer, external to pia

Question 14

What is dura mater?

Answer 14

Tough, outermost layer

Question 15

What is gray matter made of?

Answer 15

Neuron cell bodies, dendrites, unmyelinated axons, and glial cells.

Question 16

What is posterior horns?

Answer 16

House axons of sensory neurons and cell bodies of interneurons

Question 17

What are anterior horns?

Answer 17

House cell bodies of somatic motor neurons

Question 18

What are lateral horns?

Answer 18

House cell bodies of autonomic motor neurons

Question 19

What does somatic motor contain?

Answer 19

Skeletal muscle

Question 20

What does somatic sensory contain?

Answer 20

Skeletal muscles, joints, skin

Question 21

What does visceral motor contain?

Answer 21

Cardiac muscles, smooth muscles, and glands

Question 22

What does visceral sensory contain?

Answer 22

Cardiac muscles, smooth muscles, and glands

Question 23

What is central canal?

Answer 23

Horizontal band of gray matter

Question 24

What are nuclei?

Answer 24

Groups of cell bodies in the CNS

Question 25

What is white matter (Tract)?

Answer 25

Myelinated axons to and from the brain

Question 26

What is posterior funiculus?

Answer 26

Sits on top of white matter and contains sensory tracts.

Question 27

What is lateral funiculus?

Answer 27

Sits on lateral sides of spinal cord and has sensory and motor tracts

Question 28

What is anterior funiculus?

Answer 28

Sits below white matter and contains sensory and motor tracts.