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Week 14

QuestionAnswer
Dopamine, epinephrine, and norepinephrine are classified as catecholamines
What happens when an impulse reaches a synapse? chemical transmitters are released.
What happens when the first event to occur when an adequate stimulus is applied to a neuron? some of the sodium channels at the point of stimulation open.
Sympathetic responses generally have widespread effects on the body because: preganglionic fibers synapse with several postsynaptic fibers.
The vomiting reflex is mediated by the Medulla
The last step in the nonsteroid hormone mechanism of action is protein kinases activate other enzymes.
One of the few hormones that functions on a positive-feedback loop is Oxytocin
Dynamic equilibrium depends on the functioning of the crista ampullaris
Cardiac output is determined by stroke volume and heart rate
Inhibition of sympathetic vasoconstrictor impulses is considered a major mechanism of vasodilation
What is a powerful poison that acts directly on any cell and quickly kills it? lymphotoxin
Created by: Cristobalf
 

 



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