Types of Neurones

Question 1

Nerve Impulse:

Answer 1

an electrical signal that passes along the nerve cells called neurones

Question 2

Axons:

Answer 2

Ensure less time is wasted when the impulse is transferred from one neurone to another

Question 3

Sensory Neurone

Answer 3

Carry impulses from the sense organs (sensory receptors) to the CNS.

Question 3

Dendrities:

Answer 3

Extensions which form a network for easy communication.

Question 4

Motor Neurone?

Answer 4

Carry impulses from the CNS to effectors (muscles or the glands)

Question 5

Nucleus

Answer 5

Central part of the neuron; located in the cell body; produces energy for cell functions.

Question 6

Relay Neurone (Interneurone)

Answer 6

The middleman inside the CNS connects sensory to motor neurones.

Question 6

Cell Body

Answer 6

Contains the nucleus; synthesizes molecules; maintains neuron life.

Question 7

Myelin

Answer 7

Protein-lipid material; forms sheaths around axons; improves signal transmission.

Question 7

Nerve endings

Answer 7

located on the end of nerves and are scattered all along surface points of the body

Question 8

what way does impulses move

Answer 8

It travels in one direction

Question 8

Job of an neurone

Answer 8

Transmit nerve impulses

Question 9

dendron

Answer 9

Tiny branches (dendrons) which branch further as dendrites at each end. These receive incoming impulses from other neurones.

Question 10

Order in a nervous reaction

Answer 10

Stimulus -> receptor cell -> sensory Neuron -> spinal cord -> brain -> spinal cord (Relay neuron) -> motor neuron -> effector -> response

Question 11

order in a Reflexive nervous reaction

Answer 11

Stimulus -> receptor cell -> sensory Neuron -> spinal cord -> motor neuron -> effector -> response