what is homeostasis?

what are the two body systems that control homeostasis?

what is the structural hierarchy within organisms?

define the nervous system.

what are the parts of the nervous system?

what are the main parts of the PNS?

what are the main parts of the motor division?

what are the main parts of the autonomic nervous system?

What is the name given to nerve cells, and what is their purpose?

What is the basic structure of a neurone?

What are the three types of neurones?

Describe inter-neurones.

Describe sensory neurones.

Describe motor neurones.

What are effectors?

What are "helper" nerve cells called, and what are their purpose?