- The functional devision of the PNS
- Innervates smooth and cardiac muscle & the glands of the body
- Involuntary
- Function
Regulates “ the vital functions “ that maintain the internal environtment ( homeostasis )
The vital function :
Respiration, circulation, metabolism, body temperature, water metabolism, digestion, secretion
Hypothalamus
Controlling or steering the ANS
Rostral portion ® parasympathetic
Caudal ® sympathetic
Connect with the descending reticular system ( mid brain )
Cholinergic axons
- Preganglionic axons of the parasympathetic and sympathetic NS
- Post ganglionic neurons of the parasympathetic NS
- Post ganglionic axons of the sympathetic NS to the sweat glands & piloerector muscles
Adrenergic axons
- Postganglionic sympathetic axons
- Adrenal gland
