Chapter 25 Section 1 And 2

Question 1

Peripheral nervous system (PNS)

Answer 1

All the parts of the nervous system except the brain and spinal cord

Question 2

Neuron

Answer 2

A nerve that is specialized to receive and conduct electrical impulses

Question 3

Nerve

Answer 3

A collection of nerve fibers (axons) through which impulses travel between the central nervous system and other parts of the body

Question 4

Brain

Answer 4

The mass of nerve tissue that is the main control of the nervous system

Question 5

Integumentary system

Answer 5

The organ system that forms a protective covering on the outside of the body

Question 6

Reflex

Answer 6

An involuntary and almost immediate movement

Question 7

Feedback mechanism

Answer 7

A cycle of events in which information from one step controls or affects a previous step

Question 8

Retina

Answer 8

The light sensitive inner layer of the eye

Question 9

Cochlea

Answer 9

A coiled tube in the inner ear

Question 10

Central nervous system (CNS)

Answer 10

The brain and spinal cord