As parturition nears, the levels of progesterone ______ and the levels of estrogen ______
A. decrease; increase
B. increase; decrease
C. decrease; decrease
D. increase; increase
A
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Which of the following activities would fatigue your hand muscles the fastest?
A. Squeezing a ball as hard as you can without stopping B. Alternately squeezing a ball then relaxing C. Bouncing a ball on the floor as many times as you can D. Throwing a ball in the air and catching it as many times as you can
Normally most of the blood at any one time is in the capillary beds, because this is where material exchange is taking place
Indicate whether the statement is true or false
The posterior interventricular artery is a branch off of the
A. superior vena cava. B. left coronary artery. C. right coronary artery. D. coronary sinus. E. left marginal artery.
Valves are found in some ________.
A. arteries B. capillaries C. veins D. arteries and veins