nervous system 13 + 14

Question 1

Main functions of spine

Answer 1

1) Communication pathway (through cranial nerves) (spine)

2) control of reflexes (simple automatic motor response)

Question 2

How long is the spinal cord and where does it lie inside ?

Answer 2

45cm, and spine cord inside spinal column

Question 3

Identify regions on spinal cord

Answer 3

CERVICAL
SPINAL NERVES (c1-c8)

THORICAL
SPINAL NERVES t1, -t12)

LUMBAR (L1- L5)

SACRAL (S1-S5)

COCCYGEAL section (C0)

Filum Eerminale (extension of pia mater, band of connective tissue extending to bottom of spinal column where it anchors)

Conus medullaris (tails of spine)

Question 4

Identify areas on diagram

Answer 4

Anterior columns (front major descending motor pathways)
Anterior horn - motor neurones
Anterior root
Posterior root
Posterior horn - receives sensory neurones
Posterior column (back major AScending sensory pathways)
Cerebrospinal canal
Axon of sensory neurone and motor

Question 5

What is grey matter

Answer 5

Nervous tissue with cell bodies

Question 6

What is white matter

Answer 6

Nervous tissue with axons

Question 7

Diagram of stretch reflex

Answer 7

Draw

Question 8

Diagram of withdrawal reflex

Answer 8

Draw