Module 12 - Nervous System II

Question 1

Vertebrae Names & #

Superior—>Inferior

Answer 1

Cervical: 7
Thoracic: 12
Lumbar: 5
Sacral: 5—>1
Coccygeal: 4—>1

Question 2

About how wide around is your spinal cord at its widest point?

Answer 2

~the diameter of your pinkie finger

Question 3

Filum Terminale

Answer 3

“Terminal Thread”

Tapered End of the Spinal Cord

Question 4

Where is the White Matter in the Spinal Cord?

Answer 4

Superficial

Question 5

Where is the Gray Matter in the Spinal Cord?

Answer 5

Deep

Question 6

Describe the Gray Matter in the Spinal Cord

Answer 6

Butterfly Shaped
Posterior/Dorsal Horn
Anterior/Ventral Horn

Question 7

Location of Reflex Pathways/Reflex Integration Centers

Answer 7

Spinal Cord

Question 8

What holds the Spinal Cord in place?

Answer 8

Denticulate Ligaments

Question 9

Anterior v Posterior Anatomy of the Spinal Cord

Answer 9

Anterior Fissure
Posterior Sulcus

Posterior Root Ganglion

Question 10

What does the Anterior Horn contain?

Answer 10

Cell Bodies of Alpha Motor Neurons

Question 11

Meninges

Answer 11

3-layered bag encasing the CNS

Question 12

3 layers of the Meninges

Deep—> Superficial

Answer 12

Pia Mater
Arachnoid Mater
Dura Mater

Question 13

What is the meninges filled with?

Answer 13

CSF

Question 14

What does CSF stand for?

Answer 14

Cerebrospinal Fluid

Question 15

Where does the Spinal Cord start and end?

Answer 15

Foramen Magnum of the Occipital Bone —> L1/L2

Question 16

Cauda Equina

Answer 16

“Horse Tail”

Bundle of Nerves floating in a bag of CSF at the bottom of the Spinal Cord

Question 17

Lumbar Puncture/

Spinal Tap Location and Procedure

Answer 17

L3/L4

A needle is introduced into the vertebral column.
Nerves float out of the way and CSF is collected.

Question 18

Epidural Anesthesia

Answer 18

bathing nervest/a region of nerves in anesthesia

anesthesia goes on top of the dura mater
=epi dural

Question 19

How does the White and Gray Matter change as you go from the Sacral region of the Spinal Cord to the Cervical region?

Answer 19

White Matter:
gets thicker the more superior you go

Gray Matter:
predominates the sacral spinal cord
and is still pretty thick at the lumbar region

Question 20

Location of Gray Matter in the Brain

Answer 20

Superficial

Question 21

Location of White Matter in the Brain

Answer 21

Deep

Question 22

Anterior v Posterior Root v Spinal Nerve Function

Answer 22

Anterior: Motor
Posterior: Sensory

Spinal Nerve: Both Motor & Sensory Info
(Mixed Nerve)

Question 23

Location of Alpha Motor Neuron Cell Bodies

Answer 23

Anterior Horn of the Spinal Cord