Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards
share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Phys Lect 18

QuestionAnswer
Pre and Post synaptic Neurotransmitters of the Parasympathetic NS ACh is used at both of the synapses
Pre and Post synaptic Neurotransmitters of the sympathetic NS ACh is the Presynaptic Neurotransmitter in the sympathetic chain. Norepi is the neurotransmitter used by the post synaptic neuron.
Parasympathetic ACh receptors 1.Nicotinic: Located in the ganglia on Postsynaptic dendrites. 2.Muscarinic: Located in effector organ.
Main N receptor Antagonist (Anticholinergic) Hexamethonium. Blocks parasympathetics all over the body at the ganglion before the postsynaptic neuron.
Main M receptor Antagonist (Anticholinergic) Atropine. Blocks parasympathetics at the end organ so therefore can be administered locally.
Agonists that mimic ACh Cholinergic 1.Nicotine act like ACh for N receptors. 2.Muscarine act like ACh for M receptors
Sympathetic Receptors 1.Nicotinic: On the postsynaptic dentrites in the sympathetic chain or at a ganglion (**Also blocked by Hexamethonium). 2.Adrenergic: on target organ, binds Epi/Norepi.
Chromaffin cells Located in the adrenal Medulla. Have ACh Nicotinic receptors on them and receive presynaptic sympathetic. **These cells are responsible for Epi/Norepi mass release into the blood stream (release PRIMARILY EPI).
Where will Norepi be released from? Epi? Norepi: Postganglionic neurons. Epi:Adrenal Medulla
Alpha Adrenergic receptors Agonist: 1.Norepi > Epi. 2.Phenylephrine. Antagonists: 1.Phentolamine
Beta Adrenergic receptors 1.B1 agonists: Epi=Norepi. 2.B2 agonists: Epi >>> Norepi
Antagonist for all 3 Beta adrenergic receptors Propanolol
Where are Beta3 Adrenergic receptors found? Adipose cytes: encourage lipolysis in the presence of agonist for the creation of energy for bodily use.
Created by: WeeG