Urination and Kidney Function Quiz

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What is the primary function of the distal convoluted tubule?

To reabsorb water through aquaporin channels

To regulate sodium reabsorption under the influence of aldosterone (correct)

To actively pump out sodium ions, creating an electrochemical gradient

To secrete hydrogen ions to regulate plasma acidity

How does the ascending loop of Henle's loop contribute to the reabsorption process?

By reabsorbing calcium under the influence of parathyroid hormone

By facilitating the reabsorption of water through aquaporin channels

By secreting hydrogen ions to regulate plasma acidity

By actively pumping out sodium ions, creating an electrochemical gradient for reabsorption (correct)

What is the primary function of the collecting ducts?

To actively pump out sodium ions, creating an electrochemical gradient

To regulate water reabsorption through the insertion of aquaporin channels controlled by ADH (correct)

To reabsorb sodium under the influence of aldosterone

To facilitate the reabsorption of calcium under the influence of parathyroid hormone

What is the primary role of the proximal convoluted tubule (PCT) in the reabsorption process?

To actively pump out sodium ions, creating an electrochemical gradient for reabsorption Signup and view all the answers

What is the primary mechanism by which the descending loop of Henle's loop contributes to the reabsorption process?

By reabsorbing water through permanent aquaporin channels Signup and view all the answers

What is the primary role of the intercalated cells in the collecting ducts?

To secrete hydrogen ions to regulate plasma acidity Signup and view all the answers

What is the approximate amount of filtrate produced by the glomeruli each day?

200 liters Signup and view all the answers

Which condition is indicated by darker urine and a slight scent of ammonia?

Dehydration Signup and view all the answers

What is the normal range for daily urine excretion?

Minimum of 500 mL/day Signup and view all the answers

What does the presence of leukocytes in urine indicate?

Urinary tract infection Signup and view all the answers

What is the main purpose of the kidney?

To maintain homeostatic balance of plasma and excrete potential toxins Signup and view all the answers

What is the function of the macula densa?

To measure sodium and flow rate in the nephron Signup and view all the answers

Which part of the nephron is responsible for efficient absorption and secretion of solutes?

Proximal convoluted tubule Signup and view all the answers

What is the purpose of the renal hilum?

To recover water and solutes that need to be reabsorbed into circulation Signup and view all the answers

What is the functional unit of the kidney?

Nephron Signup and view all the answers

What is the approximate length of the ureters?

30 cm Signup and view all the answers

Urination and Kidney Function Quiz

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