Unit 8: 15 Autonomic Nervous System

Question 1

What are the major divisions of the nervous system?

Answer 1

CNS:
Brian
Spinal Cord

PNS:
Motor Neurons
Sensory Neurons
*Motor Neurons:
-Somatic Nervous System
-Autonomic Nervous System
*Autonomic Nervous System:
-Sympathetic Division
-Parasympathetic Division

Question 2

What is the Autonomic Nervous System (ANS)?

Answer 2

The part of the nervous system that regulates: (controls viscera)
-Cardiac muscle
-Smooth muscle
-Glands
*involuntary control
*Regulated by: hypothalamus and brainstem
*Motor pathways: series of TWO neurons from CNS to EFFECTOR
*includes sensory neurons (monitors viscera)
*Two divisions: sympathetic, parasympathetic
*Release either ACh or NE

Question 3

What is the Somatic Nervous System (SNS)?