Which of the following substances is excreted by the kidneys to regulate blood pressure?
renin
erythropoietin
calcitriol
urobilinogen
The Correct Answer is A
Renin is an enzyme that is produced by the kidneys and it acts to elevate blood pressure. When blood pressure falls, the kidneys secrete renin into the bloodstream
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
The epididymis is a coiled tube located at the back of each testicle where the sperm mature and are stored until ejaculation. Sperm are produced in the testes and then transported to the epididymis where they undergo maturation and become motile. The epididymis provides a protective environment for the sperm, allowing them to mature and become more resilient to external stressors. During ejaculation, the sperm is transported from the epididymis to the vas deferens and then to the urethra for ejaculation.
Correct Answer is D
Explanation
The largest organ in the human body by surface area is the skin. It covers the entire external surface of the body and has an average surface area of about 20 square feet in adults.
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