Norepinephrine acts on the heart by ________.
A) decreasing heart contractility
B) causing a decrease in stroke volume
C) blocking the action of calcium
D) causing threshold to be reached more quickly
D) causing threshold to be reached more quickly
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A styloid process is part of the ulna.
Answer the following statement true (T) or false (F)
What cartilage of the larynx helps to "direct" food to the esophagus?
A) epiglottis B) glottis C) thyroid D) cricoid
Which of the following gives a cell structural support, determines the shape of a cell, and directs the movement of substances through a cell?
A. The Golgi complex B. The nucleus C. The cytoskeleton D. The plasma membrane E. Cholesterol
Why is it important that blood move very slowly through the capillaries?
A. So the red blood cells won't be damaged B. To allow for adequate molecular exchange between the blood and the tissues C. This system would actually work more efficiently if blood passed through capillaries more quickly.