12.3 Neurones and Synapse

Which of the following neurone are present in the human nervous system?

• Sensory Neurone

• Impulse Neurone

• Motor Neurone

• Relay Neurone

What is the function of the axon?

• Protect the neurone

• Accelerate the flow of nerve impulse

• Coordinate metabolic activities

• Carry impulse from body cell to effector

What is the function of the Node of Ranvier?

• Protect the neurine

• Accelerate the flow of nerve impulse

• Coordinates metabolic activities

• Send signal to muscle

What is the function of the synapse?

• To facilitate the rapid conduction of nerve impulses.

• To transmit nerve impulses.

• Allow nerve impulses to travel in one direction.

• To provide nutrients for the axon.

What is/are the differences between the sensory neurons (SN) and motor neurons (MN)?

• SN has long dendrite whereas MN has short dendrite

• SN has myelin sheaths whereas MN does not.

• SN cell body is at the side of the cell but MN is at the end of the cell

• SN has receptor whereas MN does not.