Module 2 Flashcards
What is axonal conduction?
Is it selective?
The process of conducting an action potential down the axon of a neuron.
It is not very selective
What is synaptic transmission?
Is it selective?
It is the process by which the information is carried across the gap between the neuron and the postsynaptic cell.
It is highly selective because it requires a neurotransmitter to bind to molecules on the postsynaptic cell
A drug whose Effects mimics the effects of a natural transmitter would be said to do what to receptor activation?
Increase receptor activation
A drug whose effects were equivalent to reducing the amount of natural transmitter available for receptor binding would be said to do what to receptor activation?
Decrease receptor activation
True or false:
The activation over the receptor does not mean that a physiologic process will go faster. It can also make a process go slower.
True
Drugs that interfere with transmitter storage can have what effect on receptor activation?
It can cause receptor activation to decrease
Drugs that activate receptors are known as what?
Agonists
Drugs that prevent receptor activation are known as what?
Antagonist
True or false:
Selectivity is one of the most desirable qualities a drug can have
True
What part of the nervous system controls voluntary movement of muscles?
The somatic nervous system
What effect does the parasympathetic nervous system have on these:
Gastric secretion
Bladder
Bowel
Bronchial smooth muscle
The parasympathetic nervous system increase gastric excretion,
Empties the bladder, empties the bowel, and contracts bronchial smooth muscle
Which ANS system Regulates body temperature?
The sympathetic nervous system
What is a process that allows a system to adjust itself By responding to incoming information?
Feedback regulation
What are the three elements of feedback regulation loop?
The sensor, the effector, and neurons connecting the sensor to the effector
In reference to the baroreceptor reflex,
When blood pressure falls what does a baroreceptor reflects cause?(2)
When bp is too high, what does the baroreceptor reflex do? (2)
When blood pressure falls, the baroreceptor reflux causes vasoconstriction an increases cardiac output.
When blood pressure is too high, the baroreceptor causes dilation and reduces cardiac output
In most organs what branch of the autonomic nervous system has the predominant autonomic tone?
The parasympathetic nervous system
What are the three Nero transmitters for the peripheral nervous system?
Acetylcholine, norepinephrine, and Epinephrine
Cholinergic receptors usually Immediate responses to what neurotransmitter?
Acetylcholine
Adrenergic receptors mediate responses to which to neurotransmitters?
Epinephrine and norepinephrine
What are the three major subtypes for cholinergic receptors?
Nicotinic N, Nicotinic M, and muscarinic
What are the four major subtypes for adrenergic receptors?
What’s the other additional subtype to Adrenergic receptors?
Alpha 1, alpha-2, Beta1 , beta2
Dopamine
Dopamine receptors respond to dopamine neurotransmitters, what subtype do they belong to?
Adrenergic receptors
Cholinergic receptors are associated with what autonomic nervous system?
It is associated with the parasympathetic nervous system
The adrenergic receptors are associated with what autonomic nervous system?
Its associated with the sympathetic nervous system
