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Which receptor of the PNS decreases heart rate?
muscarinic
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Which receptor of the PNS stimulates the parasympathetic and sympathetic postganglion nerves?
nicotinic n
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Which receptor of the PNS releases epinephrine from the adrenal medulla?
nicotinic n
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Which receptor of the PNS is responsible for contracting skeletal muscle?
nicotinic n
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Which receptor of the PNS is responsible for contracting the ciliary muscle which focuses the lens for near vision?
muscarinic
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Which receptor of the PNS is responsible for contracting the iris spinchter muscle causes miosis or a decrease in pupil diameter?
muscarinic
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Which receptor of the PNS causes constriction of bronchi in the lungs?
muscarinic
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Which receptor of the PNS is responsbiel for contracting the detrusor muscle with increases bladder pressure?
muscarinic
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Which receptor of the PNS in responsible for relaxing the trigone and sphincter allowing urine to leave the bladder?
muscarinic
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Which receptor of the PNS increases gastric secretions and intestinal tone and motility?
muscarinic
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Which receptor of the PNS is responsible for salivation and defecation?
muscarinic
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Which receptor of the PNS is responsible for generalized sweating?
muscarinic
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Which receptor of the PNS is responsible for the male erection?
muscarinic
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Which receptor of the PNS causes vasodilation?
muscarinic
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Which receptor of the PNS causes contraction of the radial muscle of the iris causing mydrasis or an increase in pupil size?
alpha 1
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Which receptor of the PNS arteriole (skin, viscera, mucous membrane) and vein constriction?
alpha 1
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Which receptor of the PNS is responsible for male ejaculation?
alpha 1
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Which receptor of the PNS causes contraction of the prostate capsule and trigone and sphincter of the bladder?
alpha 1
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Which receptor of the PNS causes inhibition of transmitter release?
alpha 2
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Which receptor of the PNS causes an increase in heart rate, increase force of contraction, and an increase in AV conduction velocity?
beta 1
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Which receptor of the PNS releases renin in the kidney?
beta 1
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Which receptor of the PNS is responsible for vasodilation?
beta 2
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Which receptor of the PNS is responsible for bronchidilation?
beta 2
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Which receptor of the PNS causes a relaxation of the uterus?
beta 2
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Which receptor of the PNS causes glycogenolysis and enhanced skeletal muscle contraction?
beta 2
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Which receptor of the PNS causes dilation in te kidney vessels?
dopamine
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Where are the nicotinic n receptors located in the PNS?
all autonomic nervous system ganglia and the adrenal medulla
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Where are nicotinic m receptors located in the PNS?
neuromuscular junction
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Where are muscarinic receptors located in the PNS?
all parasympathetic target organs (eye, heart, lung, GI tract, bladder, sex organs, sweat glands, blood vessels)
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the study of drugs that alter processes controlled by the nervous system
neuropharmacology
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What are the 2 main divisions of the nervous system?
- somatic motor system
- autonomic nervous system
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What does the somatic nervous system control?
movement of voluntary muscles
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What are the 2 divisions of the autonomic nervous system?
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What is the function of the PNS?
- slows heart rate
- increase gastric secretions
- empties bladder and bowel
- focuses eye for near vision
- constricts pupil
- contracts bronchial smooth muscle
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What are the functions of the SNS?
- regulation of cardiovascular system
- regulation of body temperature
- implementation of the fight-or-flight response
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What are the 3 transmitters of the PNS?
- acetylcholine (Ach)
- epinephrine (Epi)
- norepinephrine (NE)
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Ach is a transmitter released by...?
- all preganglionic neurons of the PNS and SNS
- all postganglionic neurons of the PNS
- postganglionic neurons of the SNS that go to sweat glands
- all motor neurons
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NE is the transmitter released by...?
all postganglionic neurons of the SNS, except those that go to the sweat glands
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Epi is the major transmitter released by?
the adrenal medulla
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What are the different types of receptors of the PNS?
- cholinergic receptors: nicotinic n, nicotinic m, muscarinic
- adrenergic receptors: alpha 1 and 2, beta 1 and 2, dopamine
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The PNS provides the dominant tone where?
most organs regulated by the ANS
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The sympathetic nervous system provides the dominant tone where?
in blood vessels
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