Which of the following are components of the body's nonbicarbonate buffer system? 1. Hemoglobin 2. Plasma proteins 3. Organic phosphates 4. Inorganic phosphates

a. 1, 2, and 3 only
b. 2 and 4 only
c. 3 only
d. 1, 2, 3, and 4

ANS: D
The nonbicarbonate buffer system consists mainly of phosphates and proteins, including hemo-globin.

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The gland that lies between the lungs and secretes the hormones thymosin and thymopoietin is the ________.

Fill in the blank(s) with the appropriate word(s).

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