What is the main job of the pharynx?
A) mechanical digestion B) propulsion
C) absorption D) secretion
Answer: B
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Universal precautions are
A) rules used to avoid mismatched blood types in transfusions. B) specific measures that health-care workers should take to prevent transmission of bloodborne pathogens in the workplace. C) the careful administration of clotting factors to stop bleeding during surgery. D) specific measures that astronauts take in space to avoid leaving microorganisms beyond the Earth.
Which of the following could be used as a treatment for a stroke if given early in the disease progression?
A) tissue factor B) vitamin K C) calcium channel blockers D) factor X E) tissue plasminogen activator
This muscle, which is found in the neck, functions to elevate the hyoid bone and help press the tongue against the roof of the mouth during swallowing
a) mylohyoid b) sternothryroid c) sternocleidomastoid d) digastric e) masseter
The lungs deliver a regular supply of oxygen to the blood, which is in turn circulated to most all the cells of the body. At the same time oxygen is consumed during aerobic cellular respiration within these cells. This implies that ________
A) oxygen will passively diffuse into the cells B) oxygen requires active transport to enter most cells C) the concentration gradient for oxygen is steepness inside of the cell D) the rate of oxygen diffusion is independent of concentration