ANS Part 3 Flashcards
What do all preganglionic neurons release? (Para and symp)
ACH
All postganglionic neurons have what kind of receptor? (Para and symp)
Nicotinic
Are nicotinic receptors excitatory or inhibitory?
Excitatory
Parasympathetic neurotransmitters are only? (Neurotransmitter type)
ACH
Where are nicotinic receptors found?
Postganglionic neurons
What is the only example of cooperative effects?
Male sexual function
Erection is part of which division?
Parasympathetic
Most organs display and ____ effect
Antagonistic
Ejaculation is part of which division?
Sympathetic
Parts of male sexual function
- Erection
2. Ejaculation
What is the sympatho-mimetic function?
Imitate the sympathetic nervous system
What is the sympatho-lytic function?
Destroy the sympathetic nervous system
What is the parasympatho-mimetic function?
Imitate the parasympathetic nervous system
What is the parasympatho-lytic function?
Destroy the parasympathetic nervous system
Drug class question: If heart rate is very low what drug(s) should be given?
- Sympatho-mimetic, since it is adrenalin to try to speed heart rate up.
- If no success use Parasympatho-lytic, since it will shut down the parasympathetic division which is causing the slow heart rate.
Drug class question: During an asthma attack what drug(s) should be given?
- Sympatho-mimetic, since it will dilate the currently constricted blood vessels. (remember para has no business with blood vessels)
Drug class question: During an overdose what drug should be given?
- Parasympatho-lytic, since it will stop the digestion of the poison.
Alpha receptors are typically ___ by NE
Stimulated
Beta receptors are typically ___ by NE
Inhibited
a1 receptor location
Most smooth muscle cells
a2 receptor location***
Through out the CNS and the pancreas
b1 receptor location
Heart and kidneys
b2 receptor location (with examples)
Smooth muscle of vessels that go to the heart, liver, lungs and skeletal muscle
b2 receptor stimulatory or Inhibitory?
Inhibitory
b1 receptor stimulatory or Inhibitory?
Stimulatory
3 major collateral ganglia from top to bottom
- Celiac ganglia
- Super mesenteric ganglia
- Inferior ganglia
Where are muscarinic receptors found?
On all parasympathetic target organs and a few sympathetic target organs (blood vessels and sweat glands)
What happens when ACH binds to muscarinic receptors of smooth muscle?
Contraction occurs
What happens when ACH binds to muscarinic receptors of cardiac muscle?
HR decreases
Adrenergic receptor subtypes are?
- Alpha 1 & 2
2. Beta 1,2
a1 receptor function?
Cause vasoconstriction (close) in blood vessels
a2 receptor function?
Causes constriction in GI tract (shut down digestive)
b1 receptor function?
Increase heart rate
b2 receptor function (2)?
- Cause vasodilation (open) in blood vessels
2. Cause bronchodilation
Adrenergic only deals with the ___ division?
Sympathetic
