Lecture 1 Content Flashcards
What are the 4 basic tissues?
- muscle
-epithelial
-nervous
-connective
Is epithelial tissue vascularized?
No, but it rests on connective tissue.
Parasympathetic pathways have ______ pre-ganglionic and _____ post-ganglionic fiber
long, and short
Parasympathetic nerves release ____
Acetylcholine
Nicotinic receptors are found on _____ ganglionic neurons
Pre AND Post
Sympathetic nerves release _____
androgens like norepinephrine
The basal rate of activity of each system is called the ____
tone
sympathetic tone ____
- causes about 50% vasoconstriction (controls blood pressure)
- increasing or decreasing “tone” can change vessel diameter
parasympathetic tone_____
-provides background G.I activity
What is the effect of the parasympathetic system on the GI tract?
-it stimulates it, up-regulating GI smooth muscle
Parasympathetic _____ heart rate and Sympathetic ____ heart rate
Parasympathetic DECREASES heart rate and Sympathetic INCREASES heart rate
True or False: In BOTH para and sympathetic nervous system PREgangionic neurons are cholinergic.
True
Parasympatheric Ganglia are located in
effector tissues
Sympathetic ganglia are located
close to the spinal cord
Post-Ganglionic sympathetic nerves are ___ and release ____
androgenic and nor-epinephrine
Parasympathetic neutrotransmitters have ____ type(s) of receptors
2 types; nicotinic and muscarinic
Sympathetic neurotransmitters have ____ type(s) of receptors
1 type, alpha/beta GPCRs
SNS is a ____ for cardiovascular and respiratory systems and a ____ for GI
Accelerator and Brake
PSNS is a ____ for cardiovascular and respiratory systems and a ____ for GI
Break and Accelerator
Sympathetic tone controls ____
Blood pressure. this is done by increasing or decreasing tone which changes vessel diameter.
Parasympathetic tone provides ______
background G.I. activity
