Divisions of the Nervous System

Question 1

What are the two divisions of the nervous system?

Answer 1

Central Nervous System and Peripheral Nervous System

Question 2

What is the traffic controller of the nervous system?

Answer 2

Central Nervous System

Question 3

What division means “outside” or “edge”?

Answer 3

Peripheral Nervous System

Question 4

What division represents the drivers and pedestrian in a street corner?

Answer 4

Peripheral Nervous System

Question 5

What does the central nervous system consist of?

Answer 5

The brain and spinal cord

Question 6

What is the control center of the body?

Answer 6

Central Nervous System

Question 7

What regulates bodily activities and sends and receives messages to and from all body parts?

Answer 7

Central Nervous System

Question 8

What is the most important part of the nervous system?

Answer 8

Brain

Question 9

How heavy is the brain of an adult?

Answer 9

1.3 to 1.4 kilograms

Question 10

What is the bony or cartilaginous case that encloses and protects the brain?

Answer 10

Skull

Question 11

What does the thin layer of liquid between the brain and skull do?

Answer 11

It bathes the brain and acts like a shock absorber against sudden impact.

Question 12

What are the three main parts of the brain?

Answer 12

The cerebrum, cerebellum, and brain stem

Question 13

What is the largest, most important part of the brain and makes up 80 percent of the brain?

Answer 13

Cerebrum

Question 14

Where do nerve impulses that allow you to think, remember, reason, speak, and solve problems?

Answer 14

Cerebrum

Question 15

What controls most voluntary muscle contractions and identifies the information that the senses gather?

Answer 15

Cerebrum

Question 16

What is the thin layer of tissue on the surface of the cerebrum?

Answer 16

Cerebral Cortex

Question 17

What word means “rind” or “bark”?

Answer 17

Cortex

Question 18

What is covered with folds and creases?

Answer 18

Cerebral Cortex

Question 19

What is the brownish-gray neuron cell bodies?

Answer 19

Gray Matter

Question 20

What is made up of primarily of axon tracts?

Answer 20

White Matter

Question 21

What makes a part of the brain look white?

Answer 21

Myelin

Question 22

What is found deep in the brain?

Answer 22

White Matter

Question 23

What is found at the back of the brain and send impulses that help control balance and posture?

Answer 23

Cerebellum

Question 24

What coordinates the movements of muscles in your eyes, arms, and hands?

Answer 24

Cerebellum

Question 25

What does the cerebrum and cerebellum pass through?

Answer 25

Brain Stem

Question 26

What lies below the skull and is only 8 centimeters long?

Answer 26

Brain Stem

Question 27

What connects the brain to the spinal cord?

Answer 27

Medulla

Question 28

What is in charge of the bodily actions?

Answer 28

Medulla

Question 29

What is a response that happens automatically?

Answer 29

Reflex

Question 30

What occurs rapidly and without conscious control?

Answer 30

Reflex

Question 31

What extends from the medulla down the length of the spine?

Answer 31

Spinal cord

Question 32

How long is the spinal cord?

Answer 32

43 cm long in adult women and 45 cm long in adult men.

Question 33

What protects the spinal cord by the bones of the spine?

Answer 33

Spinal column

Question 34

What are the tissues of the spinal cord that form two layers?

Answer 34

The outer layer is white matter and the inner layer is gray matter.

Question 35

What are the two principal functions of the spinal cord?

Answer 35

1. It connects the brain to the nerves in the trunk, arms, and legs. 2. It controls most of the body's reflex actions.

Question 36

What carries messages between the central nervous system and the rest of the body?

Answer 36

Peripheral Nervous System

Question 37

How many are the pairs of the cranial nerves?

Answer 37

12 Pairs of cranial nerves

Question 38

How many are the pairs of the spinal nerves?

Answer 38

31 Pairs of spinal nerves

Question 39

What are the two divisions of the Peripheral Nervous System?

Answer 39

The Autonomic System and the Somatic Nervous System

Question 40

What is the one important part of the Peripheral Nervous System that normally acts without conscious thinking?

Answer 40

Autonomic Nervous System

Question 41

The ______ in the autonomic nervous system work against each other to keep body activities in perfect balance.

Answer 41

Nerves

Question 42

The autonomic nervous system can be further divided into the ___________ and ________________ nervous systems.

Answer 42

Sympathetic; Parasympathetic

Question 43

The ___________ nervous system controls the responses of the body to stressful and threatening situations.

Answer 43

Sympathetic

Question 44

The ________________ nervous system controls the bodily functions associated with rest and digestion.

Answer 44

Parasympathetic

Question 45

What consist of motor nerves originating from the brain stem and the base of the spine?

Answer 45

Parasympathetic Nervous System

Question 46

The nerves of these two systems have opposite effects on the organs and glands. These opposite effects help the body maintain ___________.

Answer 46

Homeostasis

Question 47

What is composed of cranial and spinal nerves that go from the central nervous system to the skeletal muscles?

Answer 47

Somatic Nervous System

Question 48

They are voluntary muscles because they can be contracted and moved at will. These muscles respond to impulses from the somatic nervous system. What is this?

Answer 48

Skeletal muscles

Question 49

Some reflexes involve ________ _______ even though the activity is involuntary. They also occur through the nerves of the somatic nervous system.

Answer 49

Skeletal muscles

Question 50

How do you care for your nervous system?

Answer 50

1. Get plenty of rest. 2. Be physically fit. 3. Do not take drugs without a doctor's prescription.