STRUCTURE AND ORGANIZATION OF THE NERVOUS SYSTEM

Question 1

CENTRAL NERVOUS SYSTEM (CNS)

Answer 1

• consists of the brain and spinal cord.

Question 2

PERIPHERAL NERVOUS SYSTEM (PNS)

Answer 2

• a division of the nervous system that transmits signals between the brain and the rest of the body.
• divided into two subcomponents: the somatic system and the automatic system.

Question 3

SOMATIC NERVOUS SYSTEM

Answer 3

• consists of nerves that control skeletal muscles, which are responsible for voluntary and reflexive movement.
• also consists of nerves that receive sensory input from the body.

Question 4

AUTOMATIC NERVOUS SYSTEM

Answer 4

• responsible for regulating the activity of organs and glands.

Question 5

SYMPATHETIC NERVOUS SYSTEM

Answer 5

• responsible for fight or flight response of increased heart rate, dilated pupils, and decreased salivary flow.
• responses that prepare the body for action.

Question 6

PARASYMPATHETIC NERVOUS SYSTEM

Answer 6

• helps maintain homeostatic balance in the presence of change.
• following sympathetic arousal, it works to return the body to baseline, non-emergency state.