The secretion of ADH is directly stimulated by _______

A) a change in body fluid osmolarity
B) angiotensin II
C) angiotensin I
D) renin


Answer: A) a change in body fluid osmolarity

Anatomy & Physiology

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Which of the following might serve as a secondary pacemaker for the heart?

A. Purkinje fibers B. AV node C. Neither AV node nor Purkinje fibers D. Both AV node and Purkinje fibers

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The gland(s) located near the thyroid is/are the:

A) parathyroid B) thyroid C) adrenal D) androgen

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What statement does NOT describe the methods by which chemical buffer systems operate to maintain pH?

A) Buffer systems consist of a weak acid and its conjugate weak base which function to resist large swings in pH. B) When a strong acid is added to a solution, the weak base of the buffer system binds the released hydrogen ions and removes them from solution. C) When a strong base is added to a solution, the buffer system's weak acid releases its hydrogen ions to bind the base ions. D) All excess hydrogen ions are removed from the body in the urine.

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A skull with five gracile features and one robust feature is most likely a _______

A.   male B.   female

Anatomy & Physiology