Nervous System

Question 1

Define the Nervous system

Answer 1

• A complex, highly organized network of specialized cells

Question 2

The nervous system is composed of:

Answer 2

Central Nervous System (CNS)

Peripheral Nervous System (PNS).

Question 3

Central Nervous System (CNS):

Answer 3

• The brain and spinal cord
• Controlling the activity of other organs

Question 4

Peripheral Nervous System (PNS)

Answer 4

-Composed of the nerves that connect the CNS to the rest of the body (all the other nerves in the body)

• Relays info to and from the CNS

Question 5

PNS two sub-divisions are:

Answer 5

The autonomic and somatic systems

Question 6

Function of the brain

Answer 6

Process sensory information receive from the body and respond by controlling all bodily actions and functions

Question 7

Functions of Spinal Cord

Answer 7

• Receives sensory information from the body snd sends these to the brain for processing
• Receives motor information from the brain and sends it to relevant parts of the body to control muscles, glands, and internal organs so that appropriate actions can be taken

Question 8

What happens when the spinal cord is damaged?

Answer 8

When the spinal cord is injured, the brain loses both sensory input from and control over the body.

Question 9

Function of the Somatic Nervous System

Answer 9

controls voluntary functions of the skeletal muscles system and helps to coordinate reflexes

Question 10

Function of the Autonomic Nervous System

Answer 10

controls involuntary functions

Question 11

The ANS can be further broken down into two subdivisions:

Answer 11

Sympathetic (Fight or flight)
And Parasympathetic (Rest & digest)

Question 12

What does the sympathetic nervous system do?

Answer 12

Increases the activity of muscles, organs and glands during stressful situations, threat or vigorous activity

Question 13

What does the Parasympathetic nervous system do?

Answer 13

Decreases the activity of muscles, organs, and glands, and restores them to its normal state