Just need 4 sentences answer each questions.

1. Describe the formation, function, and fate of the corpus luteum during an unfertile menstrual cycle. What happens to the corpus luteum if fertilization occurs?

2. Why is this pregnancy test called an immunoassay? Explain how this test works to detect pregnancy.

3. What secretes hCG, and what is its physiological function? Describe how hCG secretion changes during pregnancy. Now, use this information to explain how a woman in her eight month of pregnancy, and obviously showing, could have a negative pregnancy test.

4. Distinguish between exocrine and endocrine glands.

5. Where is ACTH produced? What does it do? Explain how its secretion is regulated.

6. Suppose, in performing procedure A, the test for starch and for reducing sugars both came out positive after a 1-hour incubation, but after the tubes incubated for 2 hours, the test for starch came out negative. How could you explain these results.

7. In procedure C, which test tube displayed the most rapid fall in pH? Explain the reason for this, including an explanation of how the digestion of fat can cause a fall in the pH of the solution, and the function of bile salts.

8. In procedure B, which tube showed the most digestion of egg albumin? What can you conclude abouth the pH optimum of pepsin.

9. Describe the composition of urinary casts, and explain how they can get into the urine.