Brain - Nervous System Lec 2

Question 1

What are the three protective, connective tissue coverings that encircle the spinal cord and brain?

Answer 1

Pia Mater, Arachnoid Mater and Dura Mater

Question 2

What CT layer around the spinal cord is the innermost layer?

Answer 2

Pia Mater

Question 3

What layer the Dura Mater?

Answer 3

Most superficial

Question 4

What layer is the arachnoid layer?

Answer 4

Middle layer

Question 5

What anchors the spinal cord to the coccyx?

Answer 5

Filum Terminale

Question 6

What is the cervical enlargement for in the spinal cord?

Answer 6

because it contains extra neurons that go to the arms etc

Question 7

What point is the tip of the spinal cord?

Answer 7

Conus Medullaris

Question 8

What do the dorsal and ventral root carry?

Answer 8

sensory info about skin and muscles

Question 9

How many thoracic nerves (pairs)?

Answer 9

12 (pairs)

Question 10

Which spinal nerve groups both have 5 pairs of spinal nerves?

Answer 10

Sacral and Lumbar

Question 11

How many pairs of nerves in the Cervical Nerve?

Answer 11

8 pairs

Question 12

What is the cauda equina?

Answer 12

horses tail

Question 13

What info do free nerve endings carry?

Answer 13

pain and temp info

Question 14

Why are free nerve endings slower?

Answer 14

Because they are unmyelinated

Question 15

Where are cell bodies from nerves sitting?

Answer 15

In the dorsal root ganglia