Review1 Flashcards
Another name for peripheral nervous system
Autonomic nervous system(ANS)
Which types of fibres is not belong to to PNS
Somatic fibres=motor fibres
Five aspect controlled by PNS
- Heart beat
- Relaxation and contraction of smooth muscle
- All exocrine function
- Some endocrine function
- Some steps in intermediate metabolism
Structure of ANS
2 neurons outside CNS: preganglionic & postganglionic
Preganglionic fibres made up of which types of fibres
Myelinated B fibres
Postganglionic fibres made up of which type of fibres
Non myelinated C fibres
How postganglionic neurons are organized
Carried in either nerve bundles or plexi
Three divisions of ANS
- Parasympathetic nervous system
- Sympathetic nervous system
- Enteric nervous system
Where is the output of PNS(para) come from?
- Mid-brain&medulla: cranial nerve III, VII, IX, X
2. Sacral part of the spinal cord, eg. Pelvic nerve
Where is the parasympathetic ganglia
Near to or in the innervated tissue
Function of PNS(para)
- Stimulates flow of saliva
- Slows heartbeat
- Constricts bronchi
- Stimulates peristalsis & secretion
- Stimulates release of bile
- Contracts badder
Stimulate flow of saliva: PNS or SNS
PNS
Slows heartbeat: PNS or SNS
PNS
Constrict bronchi: PNS or SNS
PNS
Stimulate peristalsis and secretion: PNS or SNS
PNS