Nervous System

Question 1

Cell body

Answer 1

Where the Nucleus and Cytoplasm is found in the CNS

Question 2

Axon

Answer 2

A very long extension from the cell body

Question 3

Dendrites

Answer 3

Forms junctions with other neurones

Question 4

Myelin Sheath

Answer 4

Surrounds the axon and is made up of fatty material. Further provides insulation to axon.

Question 5

Cytoplasm

Answer 5

Where chemical reactions take place.

Question 6

Nucleus

Answer 6

Contains the DNA

Question 7

Cell membrane

Answer 7

Controls what moves inside and outside the cell

Question 8

Nerve ending

Answer 8

Fine branches of the axon that connect to a muscle (an effector) in the effector organ

Question 9

Nerve ending

Answer 9

Fine branches of the axon that connect to a muscle in the effector organ

Question 10

What are the 3 types of neurones?

Answer 10

Sensory, Relay and Motor

Question 11

Receptor

Answer 11

The body part which detects a stimulus. They convert the stimulus into electrical impulses.

Question 12

Reflexes

Answer 12

Natural reaction which doesn’t involve your brain or any thinking. It helps protect your body.

Question 13

Synapse

Answer 13

The gap between between the 2 neurons.

Question 14

Sensory Neurones

Answer 14

Carries from the receptor to the relay neurones in the CNS

Question 15

Relay Neurones

Answer 15

Carries impulses from the sensory neurone to the motor neurone in the CNS e.g. spinal cord or brain.

Question 16

Motor Neurones

Answer 16

Takes impulses from the relay neurone 𝗶𝗻 the CNS to the effector.