)What is the function of Hydrochloric acid in digestion? a) Required to activate pepsinogen b) Works on protein-coated lipid droplets that are absorbed c) Takes part in the digestion of fats d)None of the above Q.12)The QRS complex in the Electro- cardiogram (ECG) tracing is caused by a)contraction of the atria & ventricles b) contractions of the ventricles c) closing of the atrioventicular and semilunar valves d) opening of the atrioventricular and semilunar valves Q.13)Folds of the intestinal mucosa are known as a) villib ) intestinal crypts c) circular folds d) microvilli Q.14) The blood flow through the kidney is special because a)It is supplied by three renal arteries b) Its 1st capillary beds drain into arterioles c) Its 2nd capillary beds drain into arterioles d) It contains no capillary bed Q.15) Urine drains from the Urinary bladder via the a) Papillary calyces b) Urethra c) Ureteral orifices d) Ureters Q.16)The Urinary bladder and the Ureters are lined by a) stratified cuboidal epithelium b) simple aquamous epithelium c) pseudostratified columnar epithelium d) transitional epithelium Q.17) The overall force that drives glomerular filtrationrate is a) glomerular osmotic pressure b) net filtration pressure c) capsuar hydrostatic pressure d) glomerular filtration pressure Q.18) What is the purpose of kidney tubular secretion? a) To remove substances in the blood and place them into the filtrate b) To reclaim 99 percent of the water from the filtrate c) To reclaim electrolytes, glucose, and amino acids from the filtrate d) Both (b) & (c) are correct e) Both (a) & (b) are correct

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