What is a large, active phagocytic cell?
A. macrophage (large, mobile white blood cell)
B. columnar cells of small intestines
C. red blood cells
D. spermatozoa
E. columnar cells of upper respiratory tract
A
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Defense of the body against a particular pathogen is provided by
A) innate immunity. B) adaptive immunity. C) immunological surveillance. D) skin defenses. E) fever.
Select the correct statement about a ribosome
a. It contains DNA. b. It synthesizes amino acids. c. It is often functional while attached to a nonmembranous organelle. d. It contains proteins that are synthesized at other ribosomes. e. All of the above statements are correct.
Stimulation by the autonomic nervous system results in increased insulin secretion from the pancreas during and after a meal. Which of the following are most likely to be true?
A. Increased insulin secretion is due to adrenergic agonists. B. Increased insulin secretion is due to parasympathetic stimulation. C. Acetylcholine agonists will stimulate insulin secretion. D. Increased insulin secretion is due to sympathetic stimulation. E. Both "Increased insulin secretion is due to parasympathetic stimulation" and "Acetylcholine agonists will stimulate insulin secretion" are correct.
When blood nutrients increase, insulin is secreted from the _______________ cells of the pancreas to help the transport of nutrients into cells.
a) acinar b) delta c) beta d) alpha