The Nervous System Flashcards
1
Q
what are the two main aspects of of the nervous system
A
- central nervous system
- peripheral nervous system
2
Q
CNS components
A
- brain
- spinal cord
3
Q
PNS components
A
- somatic nervous system
- autonomic nervous system
(sympathetic / parasympathetic)
4
Q
what is the peripheral nervous system
A
- transmits messages to neurones to and from CNS - relaying nerve impulses
5
Q
what is the somatic nervous system
A
- 12 pairs of cranial nerves
- 31 spinal nerves
= sends sensory impulses to CNS - sends motor impulses from CNS
6
Q
what is the autonomic nervous system
A
- automatic actions that lack conscious though
eg. breathing / heartbeat
7
Q
what is the sympathetic nervous system
A
- ‘fight or flight’
= primary activation circuits - increasing blood pressure
NTs= Acetylcholine / Norepinephrine
8
Q
what is the parasympathetic nervous system
A
- ‘rest and digest’
conservation of energy
slows down SNS activation
NTs = Acetylcholine
9
Q
difference between SNS/ PNS
(physical symptoms)
A
SNS = INCREASE HEARTRATE
PNS = DECREASE HEARTRATE
10
Q
what are the main aspects of the brain
A
- cerebrum
- cerebellum
- diencephalon
- Thalamus
- Hypothalamus
- Brain stem
11
Q
what are the lobes of the main hemispheres (left right) of the brain
A
- Frontal lobe
- Parietal lobe
- Temporal lobe
- Occipital lobe
12
Q
Frontal lobe role
A
- higher order functions
- planning - abstract reasoning - logic - personality
(Broca’s Area - speech production)
13
Q
Parietal lobe role
A
- integrates info between senses
- sense of touch / pain / temp
14
Q
Temporal lobe role
A
- auditory information
(Wernicke’s Area - speech understanding) - memory
15
Q
Occipital lobe role
A
- visual information
