Chapter 19

Question 1

What is the definition of a response

Answer 1

What your body does in reaction to a stimulus

Question 2

What is the definition of a reflex

Answer 2

A response that happens automatically

Question 3

What part of the neuron carries impulses away from the cell body

Answer 3

Axon

Question 4

What two things can a motor neuron send an impulse to

Answer 4

Gland and muscle

Question 5

What is the column of nerve tissue that links the brain to the peripheral nervous system

Answer 5

Spinal cord

Question 6

What does the somatic nervous system control

Answer 6

Voluntary actions

Question 7

What produces sound

Answer 7

Vibrations

Question 8

What do the senses of smell and taste detect

Answer 8

Chemicals in the air or in your food

Question 9

Why is pain an important sensation

Answer 9

Alerts you to any danger

Question 10

What is a synapse

Answer 10

The junction where one neuron can transfer and impulse to another structure

Question 11

What division of the nervous system is made up by the brain and spinal cord

Answer 11

Central nervous system

Question 12

What are the three regions of the brain? what are their functions?

Answer 12

Cerebellum- coordinates the actions of your muscles and helps you keep balance
Cerebrum – interprets input from the senses, controls movement, and carries out complex mental processes
Brainstem – controls your bodies involuntary action

Question 13

What is a bruise like injury of the brain called

Answer 13

Concussion

Question 14

What can result from spinal cord injuries

Answer 14

Paralyzed

Question 15

What fiber carries impulses toward the nerve cell body

Answer 15

Dendrite

Question 16

What part of the nervous system controls voluntary action

Answer 16

Somatic nervous system

Question 17

What are three types of neurons? What are their functions?

Answer 17

Interneuron – carries nerve impulses from one neuron to another
Sensory neuron- picks up stimuli from the internal or external environment and converts into a nerve impulse
Motor neuron- sends an impulse to be muscle or gland

Question 18

What are three functions of the nervous system

Answer 18

Receiving info, responding to info, maintaining homeostasis

Question 19

What are the two divisions of the peripheral nervous system? What is the difference between their functions

Answer 19

Somatic nervous system -controls voluntary actions

Autonomic nervous system – controls involuntary actions

Question 20

Describe two actions that help prevent injury to the brain and spinal cord

Answer 20

Wear a helmet and wear a seatbelt

Question 21

What is the definition of a stimulus

Answer 21

any change or signal in the environment can make an organism react

Question 22

What are the 3 main parts of a neuron? How does an impulse travel through a neuron

Answer 22

Dendrite > cell body > axon