Which of the paranasal sinuses is of major clinical significance because of its poor drainage and close proximity to the roots of the upper molar teeth?
A. Frontal sinus
B. Sphenoid sinus
C. Maxillary sinus
D. Ethmoidal air cells
Answer: C. Maxillary sinus
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Which of the male accessory glands encircles the urethra?
A. Seminal vesicle B. Bulbourethral gland C. Prostate gland D. Cowper's gland E. Urethral gland
________ is the period of time when the cell is not dividing
A) Anaphase B) Prophase C) Interphase D) Metaphase
A hormone may be
A. inactivated by its target cell. B. activated by its target cell. C. inactivated by nontarget cells. D. excreted before it has a chance to act on a target cell. E. All of the choices could be correct.
A brush border of microvilli is found in ________ epithelium, which can be found lining the ________.
A. simple cuboidal; esophagus B. pseudostratified; nasal cavity C. simple columnar; small intestine D. stratified squamous; anal canal E. stratified squamous; esophagus