Lymphocytes
A) are actively phagocytic.
B) destroy red blood cells.
C) respond to antigens.
D) are primarily found in red bone marrow.
E) decrease in number during infection.
C
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Both ________ and ________ are the regulators of effectors in most feedback loops.
A. neurotransmitters, enzymes B. hormones, nerve impulses C. enzymes, nerve impulses D. enzymes, hormones E. hormones, paracrines
The primary somatic sensory or general sensory area is located in
A. the postcentral gyrus. B. the precentral gyrus. C. the prefrontal gyrus. D. the central sulcus. E. the superior temporal gyrus.
As tertiary follicles develop, FSH levels decline due to the negative feedback effects of which hormone?
A) LH B) progesterone C) GnRH D) inhibin E) estrogen
The placenta is composed of tissues from the
A. embryo only. B. chorion only. C. mother and embryo. D. mother only.