Which endocrine gland secretes PTH?
A. Testes
B. Parathyroid
C. Thyroid
D. Pituitary
Answer: B
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The statement "It initiates contraction of urinary bladder smooth muscle" is
A) true only for the parasympathetic nervous system. B) true only for the sympathetic nervous system. C) true for both the parasympathetic and sympathetic nervous systems. D) not true for either the parasympathetic or sympathetic nervous systems. E) true only for the somatic nervous system.
A primary function of lymphocytes is to
A) release substances that initiate blood clots. B) act against foreign substances. C) phagocytize damaged cells. D) produce enzymes that dissolve blood clots.
Some leukocytes are formed from megakaryocytes
Indicate whether the statement is true or false
Which of the following is associated with vasoreflexes?
A) Elastic tissue in the tunica externa B) Smooth muscle in the tunica media C) Collagen and elastic tissue in the tunica media D) Endothelium in the tunica interna E) Fenestrations in the tunica externa