13. Given that all plasma values are within normal limits, the ingestion of a ba
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13. Given that all plasma values are within normal limits, the ingestion of a bag of salty snacks will most likely result in an increased secretion of a norepinephrine c. ADH d. cortisol e. None of the above 14. A gastrinoma is serious because it potentially results in a. gall stones b. hypertension c. ulcers d. Crohn's disease 15. What is the primary secretion of the corpus luteum? a. FSH b. c. LH d. estrogen e. none of the above 16. What hormone causes the uterine endometrium to proliferate and thicken each month? a. progesterone b. oxytocin c. growth hormone d. estrogen e none of the above 17. What does CCK do? a. pancreatic digestive enzymes are secreted b. gastric pepsinogen is secreted c. it increases lipolysis d. it increases pancreatic secretion of bicarbonate e. none of the above 18. Which of the following suppresses inflammation and the T cell response? a. cortisol b. thyroid hormone c. testosterone d. prolactin e none of the aboveExplanation / Answer
13. C; ADH Intake of salty food increases the sodium concentration of blood, now, Aldesterone increases sodium uptake in the kidneys and potassium ecretion, and is stimulated by low sodium in blood. So, aldesterone secretion will be decreased rather than increased on sodium uptake, where as ADH or vassopresin is stimulated by low blood volume, causes increased reabsorbtion of water due to hypovolemia. increased sodium concentration causes the blood to be hyperosmoler leading to hypovolaemia. So, ADH released will be increased. Cortisol also has overlaping action like aldesterone.
14. C;Ulcers Gastrinoma is a tumour of the pancrease which causes excess gastrin hormone secretion which leads to excess HCl secretion leading to ulcers in stomach.
15. B; Progesterone Corpus luteum is essential in maintaining pregnancy. the hormone secreted by corpus luteum is progesterone which maintains the endometrium.
16. D; Estrogen During the first half of the cycle endometrium is thickened by estrogen for recieving the fertilised ovum.
17. A; Pancreatic digestive enzymes are secreted CCK or cholecystokinin is secreted from the "I" cells of duodenum and jejunum. It has two most important functions, contraction of the gall bladder , and stimulates pancrease to release secretion rich in enzymes.
18. A; Cortisol It is a powerful anti inflammatory. it inhibits the formation of mediators of inflammation such as, leukotriens, postaglandins etc. They also decrease lymphocyte count, and is used as immunosupressive agent.
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