Physiology lecture 1

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How long is the pre/post ganglionic nerves in the parasympathetic system?
Long presynaptic, short postsynaptic
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How long is the pre/post ganglionic nerves in the sympathetic system?
Short presynaptic, long postsynaptic
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Where is the preganglionic origin in parasympathetic system?
Cranial nerve, pelvic nerve
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Where is the preganglionic origin in sympathetic system?
Thoracic
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Name the two cholinergic receptors and the two adrenergic receptors...
Cholinergic: nicotinic and muscarinic Adrenergic: alpha or beta
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Where is the nicotinic receptors located?
In both the para and sympathetic nervous system
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Where is the muscarinic receptors located?
Target organ synapse on parasympathetic
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What is the nicotinic and muscarinic receptors blocked by?
Nicotinic: curare Muscarinic: atropine
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Where is the alpha 1 adrenoreceptors located? What does it cause? What causes the greater effect NAdr or Adr?
Postsynaptic (sympathetic), vasoconstriction and smooth muscle contraction, NAdr > Adr
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Where is the alpha 2 adrenoreceptors located? What does it cause? What causes the greater effect NAdr or Adr? What blocks it?
Presynaptic (sympathetic), reduction in adrenergic/cholinergic transmission, NAdr > Adr
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Where is the beta 1 adrenoreceptors located? What does it cause? What causes the greater effect NAdr or Adr?
Heart, increased heart rate and force of contraction, Adr = NAdr
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Where is the beta 2 adrenoreceptors located? What does it cause? What causes the greater effect NAdr or Adr?
Causes vasodilation and smooth muscle relaxation, Adr > NAdr
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What blocks alpha receptors and beta receptors?
Alpha blocked by phentolamine, beta blocked by propranolol
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Card 2

Front

How long is the pre/post ganglionic nerves in the sympathetic system?

Back

Short presynaptic, long postsynaptic

Card 3

Front

Where is the preganglionic origin in parasympathetic system?

Back

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Card 4

Front

Where is the preganglionic origin in sympathetic system?

Back

Preview of the front of card 4

Card 5

Front

Name the two cholinergic receptors and the two adrenergic receptors...

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