1. Human Anatomy and Physiology
Autonomic nervous system

2. ANS organization

3. SNS - ANS comparison

4. SNS - ANS comparisons

5. ANS organization Parasympathetic Sympathetic Cranial, S2 & S4
Ganglia close to organ
Sympathetic
T1 - L2
Ganglia far from organ
paravertebral

6. Effects of divisions

7. Naming nerves of the ANS
All preganglionic are cholinergic (Ach)
Postganglionic neurons of parasympathetic are cholinergic (Ach)
Postganglionic neurons of sympathetic are adrenergic (norepinepherine)

8. Cholinergic receptors
Receptors that bind Ach
Types: Nicotinic receptors
Location
Postganglionic neurons (symp. & parasymp.)
Adrenal medulla cells
Skeletal muscle cells
Effect: always stimulatory

9. Cholinergic receptors
Types: Muscarinic receptors
Location
All parasympathetic target organs
Some sympathetic target organs (i.e., sweat glands)
Effect: inhibitory or stimulatory

10. Adrenergic receptors Receptors that bind norepinephrine
Classes: alpha and beta
Alpha - generally stimulatory
Except for digestion
Beta - generally inhibitory
Except for heart

11. ANS control