The divisions of the nervous system

Question 1

components of central nervous system

Answer 1

Spinal Cord and Brain

Question 2

components of peripheral nervous system

Answer 2

Autonomic and Somatic nervous system

Question 3

Components of the autonomic nervous

Answer 3

Parasympathetic and Sympathetic

Question 4

function of the brain

Answer 4

• The center of all conscious awareness
• The brain collects all the information provided by other areas of the nervous system and makes decisions to control behavior and bodily functions.
• It coordinates responses by sending signals to muscles and glands to maintain bodily regulation

Question 5

function of the spinal cord

Answer 5

• An extension of the brain
• Responsible for our reflex actions
• relays information between the brain and the peripheral nervous system, enabling coordination of sensory input and motor output

Question 6

peripheral nervous system

Answer 6

• makes up all the nerve cells outside of the brain and spinal cord
• relays nerve impulses from the CNS to the rest of the body and from the body back to the CNS
• enables coordination between internal and external environments

Question 7

somatic nervous system

Answer 7

• Part of the peripheral nervous system that controls voluntary movements of skeletal muscles.
• Contains sensory neurons that carry information from sensory receptors to the CNS.
• Contains motor neurons that transmit signals from the CNS to muscles.
• Involved in conscious, voluntary actions

Question 8

autonomic nervous system

Answer 8

• governs vital involuntary functions in the body (e.g., heart rate, digestion).
• Controls organs and glands to maintain bodily functions automatically.
• Its control center is located in the brain stem.
• Operates without conscious control, regulating processes essential for survival

Question 9

sympathetic nervous system

Answer 9

• Activated automatically when the body is exposed to stressors or threats.
• The hypothalamus sends signals to the sympathetic nervous system (SNS).
• SNS stimulates the adrenal glands to release adrenaline (epinephrine).
• Prepares the body for ‘fight or flight’ by increasing heart rate, dilating pupils, and redirecting blood flow to muscles.

Question 10

parasympathetic nervous system

Answer 10

• Activated after the threat has passed to calm the body down.
• Works to conserve and restore energy by slowing the heart rate and lowering blood pressure.
• Promotes ‘rest and digest’ functions such as digestion and gland activity.
• Balances the effects of the sympathetic nervous system to maintain homeostasis