14. Coordination and Response

Question 1

Describe the mammalian nervous system

Answer 1

Mammalian nervous system consists of:
1. The central nervous system (CNS) consisting of the brain and the spinal cord
2. The peripheral nervous system (PNS) consisting of the nerves outside of the brain and spinal cord

Question 2

Describe the role of the nervous system

Answer 2

Coordinate and regulate body functions. Allowing us to make sense of our surroundings and respond to them.

Question 3

Describe a simple reflex arc

Answer 3

1. The stimulus is detected: By a receptor in the skin
2. Sensory neurone sends electrical impulses: To the spinal cord (the coordinator)
   3, Electrical impulse is passed on: To relay neurone in the spinal cord
3. Relay neurone connects: To motor neurone and passes the impulse on
4. Motor neurone carries impulse: To a muscle in the effector
5. The muscle responses: By contracting and pulling the effector away from the stimulus object

Question 4

Describe a reflex action

Answer 4

A means of automatically and rapidly integrating and coordinating stimuli with the responses of effectors (muscles and glands)