The nervous system

Question 1

The two parts of the nervous system.

Answer 1

• The central nervous system (CNS)

- The peripheral nervous system (PNS)

Question 2

What does the CNS do?

Answer 2

The brain and the spinal cord

It processes information gathered to form the sense organs

Question 3

What does the PNS do?

Answer 3

Sends impulses from sense organs to the CNS and passes impulses to effectors (muscles) to carry out responses

Question 4

Name the 3 types of neurones (nerve cells)

Answer 4

• Sensory
• Motor
• Relay

Question 5

What does the sensory neurone do?

Answer 5

Take messages from the sense organs to the CNS

Question 6

What does the motor neurone do?

Answer 6

Take messages firm the CNS to the effectors (muscles)

Question 7

What does the relay neurone do?

Answer 7

Pass messages from sensory to motor neurones within the CNS

Question 8

Name the parts of a neurone

Answer 8

• Cell body
• Dendreon /Axon
• Myelin sheath
• Dendrites / Axon terminals

Question 9

What de stje cell body conain?

Answer 9

The nucleus

Question 10

What is the purpose of the Axon?

Answer 10

The electrical impulses travel through there

Question 11

What does the myelin sheath do?

Answer 11

Insulate the axon and speeds up the impulse

Question 12

What does the axon terminals do?

Answer 12

Hives the neurone connection to several other nerves/muscle cells