The Autonomic Nervous system

Question 1

What is ANS? With examples

Answer 1

-Part of nervous system that supplies smooth muscles, cardiac muscles, glands (supply visceral organs)

• controls visceral functions of body
  
  1. Arterial pressure
     2.Gastro intestinal motility
     3.Gastro intestinal secretion
     4.Urinary bladder emptying
     5.Sweating
     6.Body temperature

Question 2

Where is ANS?

Answer 2

Distributed throughout body
- innervate heart, lung
- muscles in walls of blood vessel
- hair follicles, sweat glands
- abdominal and pelvic viscera

Question 3

What does it mean to say that that ANS is “distributed throughout the body”?

Answer 3

Innervates:
1. Heart
2.Lung
3.Blood vessel muscles
4. Hair follicles
5. Sweat glands

Question 4

What makes up the ANS?

Answer 4

1. Central Nervous system
2. Peripheral nervous system

Question 5

Explain the relationship between the ANS and the CNS.

Answer 5

The impulses intiated in the visceral receptors are transmitted through the afferent autonomic pathways to the CNS

Question 6

Explain how the the ANS handles simple and complex reflexes. (The Central Integrating stations)

Answer 6

Simple reflexes - The Spinal cord levels

Complex reflexes - Brainstem

Question 7

What are the two anatomical divisions of the ANS?

Answer 7

1. The sympathetic division
2. Parasympathetic division