Urinary Questions: 22) Which is not a function of the kidneys? A. They regulate
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Urinary Questions: 22) Which is not a function of the kidneys? A. They regulate osmolarity of the body fluids. B. They fight osteoporosis by synthesizing vitamin D C. They help control blood pressure. D. They release waste into the bloodstream. 23) Which of the following is not an organ of the urinary system? A. kidney llecting duct ureter D. urinary bladder 24) The transition from an afferent arteriole to an efferent arteriole occurs in the A. glomerulus. B. medulla. C. cortical radiate veins. D. peritubular capillaries. 25) Which are primarily responsible for maintaining the salinity gradient of the renal medulla? A. cortical nephrons B. juxtamedullary nephrons C. collecting ducts D. proximal convoluted tubules 26) Glucose and amino acids are reabsorbed from the glomerular filtrate by A. the renal corpuscle B. the proximal convoluted tubule. C. the distal convoluted tubule. D. the glomerular capillaries. 27) In a healthy kidney, very little is filtered by the glomerulus. A. amino acids B. electrolytes C. glucose D. protein 28) Aldosterone acts on A. the proximal convoluted tubule. B. the medullary portion of the collecting duct. C. the descending limb of the nephron loop. D. the distal convoluted tubule.Explanation / Answer
22. The correct answer is - D. They release waste in to the blood-stream.
Additional Information:
Kidney helps to excrete waste product and toxic substances out side of the body through urine.
23. The correct answer is - B. Collecting duct.
Additional Information :
Our urinary system mainly composed of- 1. Kidney, 2. Ureter, 3. Urinary bladder, 4. Urethra.
While , on the other hand, collecting duct is composed of several ducts and tubules which connects nephrons to minor calyx or to the renal pelvis. It is the component of nephron which is the structural and functional unit of Kidney.
24. The correct answer is - A. Glomerulas.
Additional Information:
Glomerulas is a round shaped structure composed of capillaries and blood vessels, located in the nephrons of kidney. It receives blood from the afferent arteriole and exit into efferent arteriole. It helps in the ultrafiltration process which is the first step of urine formation.
25. The correct answer is - B. Juxtamedullary nephrons.
Additional Information:
Juxtamedullary nephrons are the special structure located close to the medulla, and comprises 20-30% of the total nephrons in the human kidney. It is responsible for maintaining the salinity gradient in the renal medulla and helped to concentrate urine.
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