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Here are the potential essay questions for the third exam in Bio 336 for summer 07.

In the space below, explain in detail how insulin and glucagon regulate blood glucose during an 8 hour fast and after eating a high carbohydrate meal.  Next discuss the similarities and differences between type I vs. type II diabetes.  Lastly compare the physiological consequences of "insulin shock" vs. a type I diabetic who has forgotten to take their insulin for several days.

 

In the space below draw a typical nephron making sure to identify the important physiological structures.  Next explain in detail where and how water is reabsorbed, making sure to differentiate between mandatory and facilitated reabsorption and how these are regulated during dehydration and following consumption of a gallon of water.    Lastly, explain in detail how loop diuretics and anti - ADH diuretics works.

 

In the space below draw how the blood concentrations of LH, FSH, estradiol, and progesterone respond during a typical 28-day menstrual cycle.  Next, explain in detail the 3 phases of the ovarian cycle and how they influence the 3 phases of the menstrual cycle.  Lastly, explain how birth control pills work to prevent pregnancy.