RMA Practice Exam (200 Questions with 100% Correct Answers)

Body activities such as breathing, circulation, and heartbeat are regulated by the - B. Autonomic nervous system Which gas is brought into the body, and which is eliminated by the respiratory system? - D. Oxygen, carbon dioxide The muscular tissue of the heart is called the - C. Myocardium Blood enters the right atrium of the heart from the - B. Vena cava The disorder characterized by degeneration of the myelin sheath is - A. Multiple sclerosis The functional, microscopic filtration unit of the kidney is the - B. Nephron The testes produce - D. Both A and B. A - Sperm; B - Testosterone The amount of circulating blood in the body of an average adult is about - D. 6 liters The main function of white blood cells is to - B. Defend the body against invading bacteria and viruses The process that stops bleeding is called - B. Hemostasis The spinal cavity contains the - C. Spinal cord