A typical action potential of a myocardial contractile cell lasts ________ millisecond(s).
A) at least 200
B) 1-5
C) at least 500
D) 50-100
E) less than 1
A) at least 200
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Using the figure below, identify the labeled part.
1) Label A: ______________________________
2) Label B: ______________________________
3) Label C: ______________________________
4) Label D: ______________________________
5) Label E: ______________________________
6) Label F: ______________________________
7) Label G: ______________________________
8) Label H: ______________________________
9) Label I: ______________________________
10) Label J: ______________________________
11) Label K: ______________________________
12) Label L: ______________________________
13) Label M: ______________________________
14) Label N: ______________________________
15) Label O: ______________________________
When a muscle contracts, there may be another muscle that contracts along with it. Which of the following terms describes that type of muscle?
A) origin B) insertion C) antagonist D) synergist
Down syndrome is due to an extra
A. X chromosome. B. autosome. C. Y chromosome. D. X chromosome or an extra Y chromosome.
The pulmonary trunk splits into what structure, taking blood to the lungs?
A. Pulmonary trunk B. Pulmonary veins C. Pulmonary valve D. Pulmonary arteries