The gonads
a. consist of a pair of testes in males and ovaries in females
b. produce gametes and secrete sex hormones
c. refer to the externally visible genitalia in both sexes
d. have all of the above characteristics
e. have only characteristics a and b
E
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T cells and B cells destroy one antigen without affecting other antigens or normal tissues, this is termed
A) memory. B) versatility. C) tolerance. D) specificity. E) antigen processing.
One function of epithelial cells is to form selective barriers regulating exchange of materials across them.
Answer the following statement true (T) or false (F)
The parasympathetic division is also known as the
A. Craniosacral division B. Enteric division C. Thoracolumbar division D. Cervicothoracic division
The receptors for estradiol, T3, and vasopressin are all located in the nuclei of target cells
Indicate whether the statement is true or false.