Chapter 9: The Nervous System

Question 1

Functions of the nervous system

Answer 1

feeling, thinking, moving, awareness, coordination of body functions, homeostasis, responsiveness to changes

Question 2

Neurons (nerve cells)

Answer 2

-Main cell type in nervous system.

-communicate via electrical impulses.

-typically have a cell body,an axon and dendrites.

Question 3

Where do neurons communicate?

Answer 3

synapse

Neurons communicate with other neurons or with cells outside of the nervous system at a small space between the cells, called a synapse

Question 4

Neurotransmitters

Answer 4

the chemical messengers in a synapse, that convey an electrical impulse from a neuron to another cell.

Question 5

The nervous system is divided into:

Answer 5

2 groups:

• Central nervous system (CNS)
• Peripheral nervous system (PN)

Question 6

Central nervous system (CNS)

Answer 6

made up of the brain and spinal cord

Question 7

Peripheral nervous system (PN)

Answer 7

made up of nerves that connect the CNS to the rest of the body.

Question 8

sensory function of nervous system

Answer 8

provided by sensory receptors at the ends of peripheral neurons, which gather information and convert it into nerve impulses

Question 9

Integrative function

Answer 9

Impulses are conducted along peripheral nerves into the CNS, where they come together to create sensations, memories, or thoughts that are converted into perception; this is the integrative function of the nervous system