Introduction to the Nervous System

The main role of the Nervous System is to

• breakdown and transport nutrients

• monitor the absorption of glucose into cells

• transport electrical messages around the body

• distribute white blood cells to sites of injury

The nervous system is made up of these 3 parts

• brain, heart and spinal cord

• brain, spinal cord and peripheral nerves

• nerves, arteries and veins

• brain, glands and blood vessels

A nerve cell has no nucleus.

• True

• False

Nerve signals pass from one nerve cell to another. These nerve cells are physically connected to one another.

• True

• False

The axon of a neuron is insulated with ________ _________ to ensure messages are sent at high speed

The space between nerve cells is called the

• interneuron

• synapse

• mylein sheath

• receptor neuron

The layer of fat that insulates the neuron's electrical messages is called the

• axon

• nucleus

• mylein sheath

• dendrites

The genetic material (DNA) in a neuron is stored in the

• axon

• nucleus

• mylein sheath

• dendrite

The 'long stretched out' part os the neuron is called the

• axon

• nucleus

• mylein sheath

• dendrite

Tags

NGSS.MS-LS1-2

The 'tree-like' part of the neuron that branches out to other neurons is called

• axon

• nucleus

• mylein sheath

• dendrite