1. The CNS is composed of the brain and spinal cord.
2. The function of the brain is to receive and process sensory information, initiate responses, store memories, and generate thoughts and emotions.
3. The function of the spinal cord is to conduct signals to and from the brain and control reflex activities.
4. a. The function of the sensory division is to gather information from sensory organs and send it to the CNS.
b. The function of the motor division is to send electrical impulses from the CNS to muscles and glands (effector organs).
5. The motor division is composed of the somatic nervous system and the autonomic nervous system.
6. The somatic nervous system controls voluntary movements.
7. The autonomic nervous system controls involuntary responses.
8. The sympathetic division prepares the body for "Fight or Flight" responses (e.g., increases heart rate), while the parasympathetic division promotes "Rest or Digest" functions (e.g., slows heart rate and aids digestion).
Section B: Divisions & Functions
1. a. Sensory (afferent) pathway
b. Integration (CNS processing)
c. Motor (efferent) pathway
2. The motor pathway carries information away from the central nervous system.
3. The sensory pathway carries information to the central nervous system.
4. The CNS is made up of the brain and spinal cord.
Parent Tip: Review the logic above to help your child master the concept of nervous system worksheet high school.
