The cation that plays a major role in determining the osmotic pressure of the plasma is ________.

A. H+
B. K+
C. Na+
D. Cl?
E. phosphate


Answer: C

Anatomy & Physiology

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The main water-pushing force in the blood capillaries is:

a. blood pressure b. sodium in the blood plasma c. sodium in the interstitial fluid d. protein in the blood plasma

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What is the difference between a calorie and a Calorie?

a. 1 calorie = 1 Calorie b. 1 Calorie = 100 calories c. 1 calorie = 100 Calories d. 1 Calorie = 1,000 calories e. 1 calorie= 1,000 Calories

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Solutes that cannot freely pass through a membrane are said to be ________.

A. osmotically inactive B. osmotically active C. selectively permeable D. hypertonic

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Which of the following does not stimulate aldosterone secretion?

A. Hyponatremia B. High blood sodium concentration C. High blood potassium concentration D. Hypotension E. Hyperkalemia

Anatomy & Physiology