In the human body, the urethra:
A) Prevents urine from flowing back up and into the kidney
B) Passes urine from the bladder to the outside of the body
C) Stores urine in the body until it can be eliminated
D) Refines the urine produced by the kidney
B) Passes urine from the bladder to the outside of the body
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How are ventilation–perfusion ()ratios distributed throughout the lungs in an erect position?
A. High ratios predominate in the apices, and low ratios prevail in the bases. B. High ratios occur in the bases, and low ratios are found in the apices. C. High ratios prevail throughout the lungs. D. Low ratios predominate throughout the lungs.
Extended care facilities provide:
A) an alternative to a nursing home. B) 24-hour nursing care. C) long-term care. D) both B and C.