A 22-year-old student has to have a physical examination to certify that he is able to participate in interscholastic athletics
During the cardiovascular examination, you report his heart rate as 60 beats/min and his arterial blood pressure at 118/68 mm Hg. From echocardiography, his end-diastolic volume is 150 mL and his end-systolic
volume is 60 mL.
From the data, you estimate his pulse pressure to be:
A. 50 mm Hg
B. 60 mm Hg
C. 68 mm Hg
D. 80 mm Hg
E. 90 mm Hg
ANS: A
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The greatest increase in entropy occurs ________.
A. when amylase produces maltose B. when starch is degraded to glucose C. when ATP is synthesized D. when glucose is converted to galactose
Which of the following occurred in the presence of tetrodotoxin?
A) The number of action potentials increased. B) The number of action potentials decreased. C) The size of the action potential decreased. D) The size of the action potential increased.
When a skeletal muscle fiber is at rest, there is more sodium outside the cell as compared to the sarcoplasm
Indicate whether this statement is true or false.