Which of the following events in the chloride shift occurs last?
A. Carbon dioxide diffuses into a red blood cell.
B. Carbonic acid dissociates to form bicarbonate and hydrogen ions.
C. Bicarbonate ions diffuse into the plasma.
D. CO2 and H2O ? H2CO3
E. Carbonic acid dissociates to form water and carbon dioxide.
C
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Which of the following would cause stroke volume to increase?
A) when venous return is decreased B) when ventricular contraction is reduced C) drugs that stimulate beta-1 receptors D) decrease in heart rate E) decreased sympathetic stimulation
Which of the following is associated with communication between body cells?
a. connective. b. epithelial. c. glandular. d. muscle. e. nervous
At birth the hairs of the scalp, eyelids, and eyebrows are replaced by coarser pigmented hairs called ________ hairs.
A. vellus B. pubic C. terminal D. lanugo E. primary
Homeostasis and occupying space are both unique characteristics of living things.
Answer the following statement true (T) or false (F)