Nervous System 2

Question 1

Sensory axons join the CNS via what root?

Answer 1

Via the dorsal, posterior root

Question 2

Motor axons joint the CNS at what root?

Answer 2

Ventral, anterior

Question 3

Spinal afferents have their cell bodies where? Sensory fibre

Answer 3

PNS

Posterior root ganglion

Question 4

Spinal efferents have their cell body where?

Away from the CNS to the organ, so the motor fibre

Answer 4

In the CNS, anterior horn

Question 5

How many cranial nerves are there and what system is this part of?

Answer 5

12 cranial nerves and part of the PNS

Question 6

The PNS is made of what 2systems?

Answer 6

Somatic and Autonomic

Question 7

What are the 2 types of autonomic nervous systems?

Answer 7

Sympathetic and Parasympathetic

Question 8

Describe the ganglia in Sympathetic system and the neurotransmitters involved?

Answer 8

Short pre ganglionic fibre which secretes Ach

Post ganglia is long and releases Norepinephrine

Question 9

Describe the ganglia in parasympathetic fibres and neurotransmitters involved?

Answer 9

Long pre ganglionic fibre that secretes Ach

Short post ganglionic fibre that also secretes Ach

Question 10

Where do the somatic nervous systems direct to?

Answer 10

Skeletal muscles