Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
10 Cards in this Set
- Front
- Back
|
What is meant by the term dual innervation with regards to the autonomic nervous system?
|
Innervation of an organ by both PSNS and SNS. Pretty much most organ systems of the blood. However, blood vessels are only innervated by sympathetics
|
|
|
Which is the predominant system for innervating tone and what are the exceptions?
|
Parasympathetics is predominating system with the blood vessels and sweat glands having sympathetics as the exception
|
|
|
What receptor of the sympathetics has no affinity for Norepinephrine?
|
Beta 2s
|
|
|
What sympathetic receptors have affinity for Epinephrine?
|
Alpha 1, Alpha 2, Beta 1, and Beta 2
|
|
|
In blood vessels what is known as the extrajunctional receptor and what does innervation of it cause?
|
The beta 2 has no affinity for Norepi and is an extrajunctional receptor. Innervation causes vasodilation (recall at low doses there is a vasodilatory effect on blood vessels with epi)
|
|
|
In the context of sweat glands postganglionic fibers release what kind of neurotransmitter to bind to what type of receptor?
|
Acetylcholine is released to bind to adrenergic receptors
|
|
|
What happens if you activate the PSNS all at once?
|
SLUDE:
Salivation Lacrimation Urination Defection Emesis Therefore, regional specificity is essential |
|
|
Between the SNS and PSNS which is the energy expending system?
|
SNS
|
|
|
In the male sex organ what is the purpose of the PSNS and the SNS?
|
PSNS is show
SNS is go! |
|
|
What are the 5 criteria that define what makes a neurotransmitter?
|
Synthesis in a nerve
Stored in a vesicle Released by a nerve (measured electrically) Recognized and have affinity for a receptor Metabolizable |
