Neurons

Question 1

What are neurons?

Answer 1

Nerve cells that process and transmits messages through electrical signals and chemical messengers (e.g.neurotransmitters).

Question 2

What are the three types of neurons?

Answer 2

Sensory neurons
Relay neurons
Motor neurons

Question 3

What is the function of a sensory neuron?

Answer 3

They carry messages from PNS to CNS.

Question 4

What is the function of relay neurons?

Answer 4

They connect sensory neurons to motor or other relay neurons.

Question 5

What is the function of motor neurons?

Answer 5

They connect CNS to effectors such as muscles and glands.

Question 6

STRUCTURE OF A NEURON
What does dendrites do?

Answer 6

Carry nerve impulses from neighbouring neurons towards cell body.

Question 7

STRUCTURE OF A NEURON
What is the function of an axon?

Answer 7

Carries impulses away from cell body, down the length of the neuoron

Question 8

ELECTRICAL TRANSMISSION
What is the charge inside the neuron cell when it is at resting state?

Answer 8

negative

Question 9

ELECTRICAL TRANSMISSION
What happens when the neuron is activated by a stimulus?

Answer 9

Neuron becomes positively charged, causing an action potential to occur.