When an infant suckles at his mother's breast, the mother's neurohypophysis releases oxytocin. This is an example of __________ stimulation.
A. humoral
B. neural
C. hormonal
D. negative feedback
Ans: C. hormonal
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Complement proteins and antibodies coat a microorganism and provide binding sites, enabling macrophages and neutrophils to phagocytize the organism. This phenomenon is termed ________.
A) diapedesis B) agglutination C) opsonization D) chemotaxis
Which vessel has a wall that is about 3/4 smooth muscle and thick external and internal laminae?
A. Large vein B. Conducting artery C. Distributing artery D. Muscular venules E. Medium vein
Which of these correctly states differences between a trained athlete and a sedentary individual at rest?
A. The athlete would have a lower heart rate and larger stroke volume. B. The athlete would have a higher heart rate and larger stroke volume. C. The athlete would have a lower heart rate and smaller stroke volume. D. The athlete would have a higher heart rate and smaller stroke volume. E. There would be no differences when the individuals were at rest.
Support cells of the brain and spinal cord are called
A. membranes. B. dendrites. C. pseudostratified columnar epithelium. D. neuroglia. E. mesoderm.