Moderate-intensity physical activity is an energy expenditure of ____ calories per week.
A. 150
B. 300
C. 750
D. 1000
E. none of the above
Answer: D
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While discussing the physiological process behind penile erection, the anatomy and physiology instructor mentions that what substance is released to facilitate smooth muscle relaxation and shunting of blood into the sinusoids?
A) Norepinephrine B) Nitroglycerine C) Nitric oxide D) Nicotinic acid
Cancer starts by a/an ____ altering a cell's DNA in a way that allows the cell to dictate its own rate of growth.
A. initiators B. retroviruses C. promoters D. suppressor genes E. oncogenes
Which structure(s) is/are housed in the lungs?
A) bronchioles B) laryngopharynx C) trachea D) diaphragm
The crucial first step of basic life support is:
A) opening the airway. B) rescue breathing. C) chest compressions. D) assessment.