Introduction

Question 1

What is CNS made up of?

Answer 1

Brain (forebrain, midbrain, hindbrain) and spinal cord (31 segments)

Question 2

What is function of CNS?

Answer 2

Receives, processes and stores information and sends messages destined for muscles, glands and organs

Question 3

What is function of PNS?

Answer 3

Transmits information to and from CNS by sensory and motor nerves

Question 4

What are 2 divisions of PNS?

Answer 4

1. Somatic nervous system

2. Autonomic nervous system

Question 5

Function of SNS?

Answer 5

• Controls voluntary movements
• Carries sensory information from sensory organs to CNS
• Relays motor (movement) commands to muscle

Question 6

Function of ANS?

Answer 6

• Involuntary processes (heart rate, respiration etc)

- Operates automatically without conscious direction

Question 7

What can ANS be divided into?

Answer 7

1. Sympathetic nervous system

2. Parasympathetic nervous system

Question 8

What is function of sympathetic nervous system?

Answer 8

Fight or flight response

Question 9

What is function of parasympathetic nervous system?

Answer 9

Rest and digest response

Question 10

What do both divisions of PNS have?

Answer 10

Sensory and motor components

Question 11

What part of ANS is within CNS?

Answer 11

Autonomic motor neurone cell bodies in brain and spinal cord

Question 12

How is information relayed to CNS from PNS?

Answer 12

1. In PNS, sensory receptor neurones respond to physical stimuli (touch, temperature)
2. Send signals to CNS
3. Sensory information processed by CNS
4. Motor neurones return signals to muscles and glands of PNS
5. These respond with motor output