The nervous system and responding to stimuli

Question 1

Function of receptors

Answer 1

Detect external stimuli

Question 2

Functions of effectors

Answer 2

Bring about responses to stimuli

Question 3

How do receptors communicate?

Answer 3

With effectors via the nervous system and the hormonal system.

Question 4

What is the central nervous system made up of?

Answer 4

Neurons

Question 5

3 main types of neuron

Answer 5

Sensory neurons, motor neurons, and relay neurons

Question 6

What does the central nervous system consist of?

Answer 6

Brain and spinal cord only

Question 7

How do receptors work?

Answer 7

1) When they sense a stimulus, they send electrical impulses along the sensory neurons to the CNS.
2) The CNS then sends electrical impulses to an effector along the motor neuron.
3) The effector responds accordingly

Question 8

What is the job of the CNS?

Answer 8

Coordinating a response

Question 9

Why is the nervous system able to produce rapid responses?

Answer 9

The neurons transmit information using high-speed electrical impulses.

Question 10

What are synapses and what do they do?

Answer 10

1) Synapses are the connections between 2 neurons.
2) The nerve signal is transferred by chemicals called neurotransmitters which move across the gap.
3) These chemicals can then set off a new electrical signal into the next neurons.