Endogenous vitamin D synthesis begins in the:
A. intestine
B. kidney
C. liver
D. skin
E. bone
ANS: D
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The binding of an antigen to an antibody can result from all of the following except
A) neutralization of the antigen. B) agglutination or precipitation. C) complement activation. D) opsonization. E) activate T cells.
pH
A. increases with acidity. B. is measured on a scale of 0 to 10. C. is a measure of the hydrogen ion concentration. D. reflects sodium content of body fluids. E. is not related to amounts of carbon dioxide in the body.
The text makes a distinction between positive and negative sexual rights. An example of a negative sexual right is the:
A. freedom to express one's sexuality with same-gender partners. B. freedom to experience sexual pleasure. C. freedom from sexual abuse and violence. D. right to reproductive self-determination.
Nutrients reach the surface of the skin (epidermis) through the process of ________.
A) absorbing materials applied to the surface layer of the skin B) utilizing the products of merocrine glands to nourish the epidermis C) filtration D) diffusing through the tissue fluid from blood vessels in the dermis