Receptors Flashcards
Are pre-ganglionic sympathetic short or long?
Short
What receptor type do tissues and organs have to receive sympathetics?
Adrenergic
What organ in the body is a specialized post-ganglionic sympathetic?
Adrenal medulla
What neurotransmitters does the adrenal medulla have?
20% norepinephrine and 80% epinephrine
What percentage of spinal nerve contains sympathetic fibers?
8%
What neurotransmitter does sympathetic spinal nerve release?
Acetylcholine
What does sympathetic spinal nerve innervate?
BVs, sweat glands, piloerector
What kind of receptors do blood vessels, sweat glands, and piloerectors have?
Cholinergic
What do adrengeric receptors respond to?
Epinephrine and norepinephrine.
What is the primary neurotransmitter that adrenergic receptors respond to?
Epinephrine
What kind of receptor:
Responds to norepinephrine or epinephrine
Is located in the blood vessels?
And causes vasoconstriction?
Alpha adrengeric receptors
What kind of receptor:
Respond to epinephrine
Is located in heart and adipose tissue
And causes an increase in heart rate, increases contractility, and lipolysis.
Beta 1 adrenergic receptor
What kind of receptor:
Responds to epinephrine
Is located in bronchi, skeletal muscle, and liver
And causes bronchi dilation, blood vessels dilation, and glycogenolysis
Beta 2 adrengeric receptor
Where in the body are there sympathetics but no parasympathetics?
Blood vessels