What is the endocardium?
A. A fluid-filled, double-walled membrane that surrounds the heart
B. The tissue that lines the heart's four chambers
C. The cardiac muscle tissue of the heart
D. None of these are correct.
Answer: B
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On the os coxae, the ischial ramus is fused to the
A. ischial spine. B. pubic tubercle. C. ischial body. D. superior pubic ramus. E. inferior pubic ramus.
Programmed cell death occurs during development, including the removal of webbing between fingers of the fetus. This process is known as
A. mitosis. B. cell differentiation. C. apoptosis. D. cell specialization.
Which of the following structures secrete mucus?
a. salivary glands b. esophagus c. stomach d. colon e. all of these answers.
When the renal tubules secrete hydrogen ions into the tubular fluid, they ________ at the same time.
A. reabsorb sodium B. reabsorb potassium C. secrete sodium D. secrete potassium E. secrete chloride