ANS I Flashcards
What part of the ANS is used during stress?
sympathetic nervous system
What part of the ANS is used during rest?
parasympathetic nervous system
What is lesion of the sympathetic system to the face and head and is characterized by miosis of the pupil, anhidrosis, vasodilation, ptosis, and warm blush?
Horner’s syndrome
What are the modulating biochemicals of neurotransmitters of the ANS?
purines
peptides
prostaglandins
________ produces a longer, more diffues effect than direct innervation.
Nuerohormone
What receptors are found on all postganglionic autonomic cell bodies and produces bot sympathetic and parasympathetic effects?
Nicotinic Receptors
What is the effect of nicotinic receptor stimulation?
opens sodium channels
What receptors are found on all effector cells innervated by postganglionic cholinergic fibers and produces typical parasympathetic effects?
muscarinic receptors
What is the effect of M1 muscarinic receptors?
increases cytosolic calcium in ganglia and glands
What is the effect of M2 muscarinic receptors?
opens K+ channels in cardiac and smooth muscle
What is the effect of M3 muscarinic receptors?
increases cytosolic calcium in glands and smooth muscle
What receptors are found in all effector cells innervated by postganglionic adrenergic fibers and produces typical sympathetic effects?
alpha and beta
What receptors typically produce stimulation and contraction?
alpha 1 and beta 1
What receptors typically produce inhibition and relaxation?
beta 2
How does a drug that depletes vesicles of norepinephrine (NE) affect blood pressure?
It decreases it
