Nervous System
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1
What is CNS and PNS?
Central nervous system and peripheral nervou system.
Central nervous system is spinal cord and brain&brain stem.
Peripheral nervous system is connection to outside world.
Central nervous system is spinal cord and brain&brain stem.
Peripheral nervous system is connection to outside world.
2
What are the targets for the ANS?
Cardiac and smooth muscles, Glands (Exocrine and Endocrine)
3
What are the targets for the SNS?
Skeletal muscle
4
What branches from Peripheral Nervous System?
Autonomic nervous system - Involuntary and smooth and cardiac muscle.
Somatic nervous system - Voluntary and skeletal muscle.
Somatic nervous system - Voluntary and skeletal muscle.
5
What is pns and sns?
Branches from Autonomic nervous system.
* Parasympathetic nervous system - rest and digest, inables emptying of bladder, food digestion, housekeeping or calming.
* Sympathetic nervous system - Fight or flight response, inhibits urination, pupils dilate, inhibits digestion, increase glycose conversion.
* Parasympathetic nervous system - rest and digest, inables emptying of bladder, food digestion, housekeeping or calming.
* Sympathetic nervous system - Fight or flight response, inhibits urination, pupils dilate, inhibits digestion, increase glycose conversion.
6
What neurotransmitters does Sympathetic preganglions release or use:
Acetocholine
7
What neurotransmitters do Sympathetic postganglions release or use:
Norepinephrine and epinephrine
8
What neurotransmitters do Parasympathetic preganglions release or use:
Acetocholine
9
What neurotransmitters do Parasympathetic postganglions release or use:
Acetocholine
10
Name the 2 Cholinegeric receptors:
Nicotinic -
ANS postganglionic neurons
Opens nonspecific cation channels
Influx of Na+ than efflux of K+
Depolarization to threshold
Motor end plates of skeletal muscle
Some CNS
Muscarinic -
Effector cell membranes
Smooth and cardiac and glands
5 subtypes of receptors
G-protein linked second messenger system.
ANS postganglionic neurons
Opens nonspecific cation channels
Influx of Na+ than efflux of K+
Depolarization to threshold
Motor end plates of skeletal muscle
Some CNS
Muscarinic -
Effector cell membranes
Smooth and cardiac and glands
5 subtypes of receptors
G-protein linked second messenger system.
11
What are the 2 types of Adrenergic receptors?
Alpha and Beta receptors
12
Alpha 1
Present in most sns tissue
Ca++ second messenger system
Generally excitatory to target organ
Ca++ second messenger system
Generally excitatory to target organ
13
Beta 1
Binds to NE and Epi equally
Primarily in the heart
Generally excitatory response
cAMP second messenger system
Primarily in the heart
Generally excitatory response
cAMP second messenger system
14
Beta 2
Binds to Epi preferably
Smooth muscle of arteries and airways
Generally inhibitory response
cAMP second messenger system
Smooth muscle of arteries and airways
Generally inhibitory response
cAMP second messenger system
15
Alpha 2
cAMP second messenger system
Generally inhibitory to target organ
Generally inhibitory to target organ
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