8What are the primary secretions of the pancreas and what are the main functions

Question

8What are the primary secretions of the pancreas and what are the main functions of those secretions?

9What role does gastrin play?

10What blood condition can result from excessive vomiting?

11 How does filtrate from glomerular filtration compare to blood plasma (in regard to components that are found in each)?

12 What mechanism is involved in the maintenance of the osmotic gradient in the medulla of the kidneys?

13How is the concentration of urine regulated?

14 What is the function of the macula densa?

15Describe the location of the kidneys.

16Which ion is coupled with the reabsorption of glucose from the nephron?

17What systems are involved in maintaining blood pH?

Explanation / Answer

8. primary secretions of pancreas is Insulin & Glucagon.Insulin lowers blood glucose level whereas glucagon increases blood glucose level.

9. Gastrin stimulate the secretion of gastric juice and gastric motility.

10. Excess vomiting leads to acidic pH in blood due to loss of fluid.

11. GFR is nothing but blood plasma but only the difference is GFR do not contain plasma proteins. Whereas blood plasma contain lot of proteins.

12.Counter current mechanism is involved in the maintenance of osmotic gradient in medulla of kidneys.

13. Concentration of urine is regulated by the hormone Anti diuretic hormone.

14. Macula densa senses concentration of Sodium chloride in our body and thereby regulate GFR by releasing renin and modify the resistance of afferent arteriole.

15.kidneys lie in the abdominal cavity behind peritoneum. It is a retro peritoneal organ.

16. sodium ion is couples with sodium reabsorption.

17. respiratory system, renal system and blood systems are involved in maintaining blood pH.

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