Key Area 2.3 (a) control and communication: nervous system

Question 1

Name the parts of the central nervous system

Answer 1

Brain & spinal cord

Question 2

What are the three main types of neurons

Answer 2

Sensory neuron
Motor neuron
Relay neuron

Question 3

Describe the function of the sensory neuron

Answer 3

Carry messages as electrical impulses from receptors in the sense organs towards the cns

Question 4

Describe the of of the relay neuron

Answer 4

Messages carried as electrical impulses through the cns to motor neurons

Question 5

Describe the job of motor neurons

Answer 5

Carry messages as electrical impulses from the CNS to the muscles or glands that are the effectors.

Question 6

What do the motor neurons enable

Answer 6

Motor neurons enable the effectors to make a response which can be a rapid action from a muscle or a slower response from a gland

Question 7

What is the function of the cerebrum

Answer 7

Site of conscious thought, reasoning, memory, emotions, personality, intelligence, language etc.

Question 8

What is the function of the cerebellum?

Answer 8

Centre of balance, co-ordination and movement

Question 9

State the function of the medulla

Answer 9

Centre of control for breathing and heart rate ( automatic functions )

Question 10

Name the parts of the nervous system

Answer 10

Neurons , brain, spinal cord