Chapter 25: The Urinary System

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Questions and Answers

What is the term for the absence of urine production?

  • Anuria (correct)
  • Polyuria
  • Oliguria
  • Glomerulus

Which food type generally raises the pH of urine?

  • Dairy (correct)
  • Citrus fruits
  • Vegetables
  • Meats

What does the presence of ketones in urine indicate?

  • High glucose levels
  • The body using fat for energy (correct)
  • Normal protein consumption
  • Adequate carb intake

What is the function of the glomerulus in the nephron?

<p>Blood filtration (D)</p> Signup and view all the answers

What substance is normally found in urine and can indicate a urinary tract infection?

<p>Leukocytes (D)</p> Signup and view all the answers

Which condition can lead to kidney stones or osteomalacia?

<p>Chronic high urine pH (A)</p> Signup and view all the answers

Which molecule type is harder to remove from the body due to filtering limitations?

<p>Large drug molecules (D)</p> Signup and view all the answers

What process must vitamin D undergo in the kidney to become active?

<p>Hydroxylation (C)</p> Signup and view all the answers

Which hormone is needed to regulate calcium levels in the blood?

<p>Calcitriol (A)</p> Signup and view all the answers

What condition can inadequate vitamin D levels lead to?

<p>Osteoporosis (C)</p> Signup and view all the answers

Which organ primarily produces erythropoietin (EPO)?

<p>Kidneys (B)</p> Signup and view all the answers

Which mechanism involves the movement of solutes with sodium?

<p>Symport mechanism (B)</p> Signup and view all the answers

What is the function of aquaporin channels in the descending Loop of Henle?

<p>Enhance water reabsorption (B)</p> Signup and view all the answers

Which hormone increases the number of sodium pumps in the DCT?

<p>Aldosterone (B)</p> Signup and view all the answers

What is the main function of Endothelins in the kidneys?

<p>Cause vasoconstriction (C)</p> Signup and view all the answers

Which hormone inhibits aldosterone, allowing sodium to leave and water to be excreted?

<p>Natriuretic hormones (B)</p> Signup and view all the answers

What regulates acid and bases slowly compared to the lungs' ability to rid the body of acids?

<p>The kidneys (B)</p> Signup and view all the answers

How do diuretics affect urine volume?

<p>Increase urine volume (D)</p> Signup and view all the answers

What effect does caffeine have on ADH?

<p>Inhibits ADH release (A)</p> Signup and view all the answers

What is the main function of PCT (Proximal Convoluted Tubule) regarding hydrogen ions?

<p>Secrete hydrogen ions to lower acidity (D)</p> Signup and view all the answers

What does the natriuretic hormone do?

<p>Inhibit sodium reabsorption (A)</p> Signup and view all the answers

What is the medical term for urination?

<p>Micturition (D)</p> Signup and view all the answers

Where does urine form in the body?

<p>Kidneys (A)</p> Signup and view all the answers

What causes ADH to work on the cell's membrane and pull water back for reabsorption?

<p>Low osmolarity in blood (D)</p> Signup and view all the answers

What is the main function of nephrons in the kidney?

<p>Absorb solutes (C)</p> Signup and view all the answers

Which part of the nephron is responsible for reabsorption and secretion of substances?

<p>Proximal convoluted tubule (PCT) (C)</p> Signup and view all the answers

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