The major body parts derived from endoderm are the epithelial lining of
A) all of the above. B) the digestive tract.
C) the urinary bladder. D) the respiratory tract.
A
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A person has a 50% blockage of one coronary artery but a good prognosis because of vessel anastomoses. What can this person do to increase the density of these anastomoses?
A. Engage in aerobic exercise B. Eat a high-fat diet C. Control elevated blood glucose D. Maintain a sedentary lifestyle
Crossing over is important for ________.
increasing genetic variability preventing mutations limiting genetic recombination maintaining chromosome structure
During a normal inspiration, which event occurs first?
A. air flows into lungs B. alveolar pressure becomes subatmospheric C. diaphragm contracts D. intrapleural pressure becomes more negative E. thoracic volume increases
High levels of radiation are NOT used
A. to kill cancer cells. B. to sterilize medical equipment. C. as tracers to detect molecular changes.