Filtration, reabsorption and secretion are important functions of the urinary sy
ID: 82165 • Letter: F
Question
Filtration, reabsorption and secretion are important functions of the urinary system; however, the process of filtration is of lesser importance. TRUE or FALSE. Urea and uric acid are both nitrogenous waste products that must be removed from the body. TRUE or FALSE. Sulfuric acid is the main acid found in the stomach. TRUE or FALSE. Nephrons are macroscopic functional units of kidney tissue. TRUE or FALSE. Bile is manufactured by the spleen. TRUE or FALSE. The process of urine formation begins in the glomerulus and loop of Henle. TRUE or FALSE. The urinary system is also called the excretory system, and one of its main functions is to remove certain waste products from the blood and eliminate them from the body. TRUE or FALSE. The urinary system comprises two (2) kidneys, one (1) ureters, two (2) urinary bladders and one (1) urethra. TRUE or FALSE. A small blood vessel, called the efferent arteriole, supplies the glomerulus with blood. TRUE or FALSE. The soft, blood-rich spleen is the smallest lymphoid organ. TRUE or FALSE. The pancreas is a soft, elongated organ lying posterior to the greater curvature of the stomach. TRUE or FALSE. In the male, semen is acidic; in the female the vagina is alkaline. TRUE or FALSE. The nervous and the endocrine systems are the major controlling systems of the body. TRUE or FALSE.Explanation / Answer
66. True, Urea and Uric acid are both nitrogenous waste products that must be removed from the body. Other nitrogenous wastes include ammonia and creatinine.
67. False, Hydrochloric acid is the main acid found in the stomach.
68. True, Nephrons are the functional units of the kidney that make urine.
69. False, Bile is manufactured in the liver and stored in the gall bladder. It helps in the digestion of fat.
70. True, The process of urine formation begins in the glomerulus and Loop of Henle. As blood flows through the glomerulus, the blood pressure pushes water and solutes from the glomerular capillaries into the Bowmans capsule. This glomerular filtration is the first step in urine formation. As the filtrate moves through the loop of Henle, the needed substances and some water are reabsorbed from the loop of Henle into the vasa recta capillaries. This reabsorption of vital nutrients from the filtrate is the second step in urine formation. At the same time, waste ions and hydrogen ions pass from the capillaries into the renal tubuleand combines with the filtrate. This is called secretion and is the final step in making urine.
71. True
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