The Nervous System

Question 1

What is the nervous system?

Answer 1

Network of cells , it is our internal communication system and is based off of electrical and chemical signals.

Question 2

What are the 2 subsystems The Nervous System is divided into?

Answer 2

• Central nervous system
• Peripheral nervous system

Question 3

What is the role of the spinal cord in the CNS?

Answer 3

Spinal chord is an extension of the brain.Transport messages to and from the brain and connects nerves to the peripheral nervous system.

Question 4

What is the role of the brain in the CNS?

Answer 4

Centre of conscious awareness.

Question 5

What 2 subsystems is the PNS divided into?

Answer 5

• Somatic
  -Autonomic

Question 6

What is the Somatic PNS?

Answer 6

Governs conscious movement, eg muscle movement and consists of
motor and sensory nerves.

Question 7

What is the Autonomic PNS?

Answer 7

Regulates the bodies internal functions.

Question 8

What 2 subsystems does the Autonomic PNS divide into?

Answer 8

-Sympathetic
-Parasympathetic

Question 9

Describe sympathetic PNS.
Provide examples.

Answer 9

Responsible for our flight or flight response,
EG dilates pupils, speeds up heart rate, inhibits digestion.

Question 10

Describe Parasympathetic PNS.
Provide examples.

Answer 10

Responsible for our rest and digest state, and our unconscious vital functions
EG stimulates digestion, constricts pupils, slows heartbeat, contracts bladder