Which of the following is a description of the principle of autonomic antagonism as it relates to the autonomic nervous system?

If sympathetic impulses tend to stimulate an effector, parasympathetic impulses tend to inhibit it.

Sympathetic responses generally have widespread effects on the body because:

preganglionic fibers synapse with several postsynaptic fibers.

Which of the following is not true of a receptor potential?

It follows the all-or-none law.

The last step in the nonsteroid hormone mechanism of action is:

protein kinases activate other enzymes.

What is the functional significance of large areas of cardiac muscle being electrically coupled to form a single functional syncytium?

Because they form a syncytium, muscle cells can pass an action potential along a large area of the heart wall, stimulating contraction in each muscle fiber of the syncytium.

Which are the two baroreceptors that are located near the heart?

aortic baroreceptors and carotid baroreceptors

During inspiration, the expansion of the lungs causes:

a decrease in alveolar pressure.

Which of the following is not a means of transporting oxygen in the blood?

Combined with the bicarbonate ion (HCO3–)

The enterogastric reflex causes:

inhibition of gastric peristalsis.

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Sharmecia Bailey

Physiology Week7-13

Question	Answer
The active transport mechanism in the plasma membrane that transports sodium and potassium ions in opposite directions and at different rates is the	sodium-potassium pump
Which of the following antidepressants acts by blocking the action of monoamine oxidase (MAO)?	Phenelzine
Which of the following is a description of the principle of autonomic antagonism as it relates to the autonomic nervous system?	If sympathetic impulses tend to stimulate an effector, parasympathetic impulses tend to inhibit it.
Sympathetic responses generally have widespread effects on the body because:	preganglionic fibers synapse with several postsynaptic fibers.
Which of the following is not true of a receptor potential?	It follows the all-or-none law.
The last step in the nonsteroid hormone mechanism of action is:	protein kinases activate other enzymes.
A hematocrit of 56% would be an indication of:	polycythemia.
What is the functional significance of large areas of cardiac muscle being electrically coupled to form a single functional syncytium?	Because they form a syncytium, muscle cells can pass an action potential along a large area of the heart wall, stimulating contraction in each muscle fiber of the syncytium.
Which are the two baroreceptors that are located near the heart?	aortic baroreceptors and carotid baroreceptors
Molecules formed by the reactions of the complement cascade assemble themselves on the enemy cell’s surface, which results in	cytolysis.
Which organ has several functions, including defense, hematopoiesis, red blood cell and platelet destruction, and blood reservoir?	spleen
The ability of our immune system to attack abnormal or foreign cells but spare our own normal cells is called:	self-tolerance.
During inspiration, the expansion of the lungs causes:	a decrease in alveolar pressure.
Which of the following is not a means of transporting oxygen in the blood?	Combined with the bicarbonate ion (HCO3–)
Standard atmospheric pressure is _____ mm Hg.	760
Cellulose is a residue of digestion that comes from:	carbohydrates.
The enzyme pepsin begins the digestion of:	protein.
The enterogastric reflex causes:	inhibition of gastric peristalsis.
Which phase(s) of gastric secretion is(are) stimulated by the sight, taste, and smell of food?	Cephalic phase
Bicarbonates are useful in the GI tract to:	neutralize hydrochloric acid.

Created by: sbailey009

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