FOUND-nervous system Flashcards
1
Q
what are the 2 types of nervous system?
A
CNS
PNS-peripheral nervous system
2
Q
which structures make up the CNS?
A
brain
brain stem
spinal cord
3
Q
which structures make up the PNS?
A
parts of nervous system outside brain and spinal cord
eg cranial nerves / spinal nerves/ peripheral nerves/ neuromuscular junctions
4
Q
what does the PNS split into?
A
somatic
autonomic
5
Q
what is the role of somatic nervous system?
A
controls conscious activities
6
Q
what is the role of autonomic nervous system?
A
controls unconscious activities
7
Q
what is the ANS split into?
A
- sympathetic nervous system
- parasympathetic
8
Q
what is the role of the sympathetic nervous system?
A
fight or flight
- increase bp
- increase heart rate
- sweating
- decrease digestion
- blood diverted to brain and muscles
- pupils dilate
- increased adrenaline production and release
- blood vol increased-kidney released renin
9
Q
what is the role of the parasympathetic nervous system?
A
rest and digest
- acetylcholine released (slow heart rate)
- blood flow to digestive system
- pupils constrict
- heart rate reduced
- blood pressure reduced
- salivation increased
