The pericardial sac that encloses the heart is a two-layered structure. The outer layer is the ________
A) fibrous pericardium B) epicardium C) serous pericardium
Answer: A
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Which of the following mechanisms produces the most ATP during cellular respiration?
A) oxidative phosphorylation B) oxidation reactions C) lactic acid production D) substrate-level phosphorylation
When in development do egg and sperm begin to form within primitive ovaries and testes?
A. 6 weeks B. 14 weeks C. 26 weeks
Which of the following is true about cardiac muscle tissue?
A. Cardiac muscle is voluntary. B. Cardiac muscle lacks striations. C. Intercalated discs allow atrium or ventricles to contract simultaneously. D. Intercalated discs allow slow, accurate electrical transmission between cells.
Extracorporeal shock-wave lithotripsy is used to treat
A) gout. B) kidney failure. C) kidney stones. D) a urinary tract infection.