Anatomy of the Nephron and Urine Composition
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Questions and Answers

What is the first part of the nephron?

  • Renal tubule
  • Collecting duct
  • Bowman's capsule (correct)
  • Renal artery

How much filtrate is produced by the kidneys each day?

  • 100 liters
  • 200 liters (correct)
  • 50 liters
  • 20 liters

What is the normal range for daily urine production?

  • More than 2 liters
  • 1 to 2 liters (correct)
  • Less than 500 mL
  • 500 mL to 1 liter

Which of the following can affect the color of urine?

<p>All of the above (D)</p> Signup and view all the answers

What does the presence of ketones in the urine indicate?

<p>The body is using fat for energy (D)</p> Signup and view all the answers

What is the term for the overproduction of urine?

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

What is the primary function of vitamin D in the body?

<p>To regulate calcium levels in the blood (B)</p> Signup and view all the answers

What is the role of the kidneys in regulating blood pressure?

<p>They produce ADH, renin, and aldosterone to regulate BP (C)</p> Signup and view all the answers

What is the primary role of erythropoietin (EPO) produced by the kidneys?

<p>To increase red blood cell production (A)</p> Signup and view all the answers

What is the primary function of the kidneys in regulating the body's pH?

<p>They help recover electrolytes like sodium, potassium, and calcium (C)</p> Signup and view all the answers

Which of the following is NOT a common function of the kidneys?

<p>Regulating the body's temperature (D)</p> Signup and view all the answers

What is the medical term for urination?

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

Which part of the kidney regulates renin release to influence blood volume?

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

What is the function of aquaporin channel proteins in the kidney?

<p>Pull water back into interstitial spaces (B)</p> Signup and view all the answers

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

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

At what point does the urge to urinate typically begin, based on volume in the bladder?

<p>$150$ mL (A)</p> Signup and view all the answers

What is the approximate length of the male urethra?

<p>$20$ cm (A)</p> Signup and view all the answers

What happens if osmolarity is high in the kidneys?

<p>Cells contract to form less urine (A)</p> Signup and view all the answers

Which part of the kidney has many microvilli to absorb and secrete solutes?

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

What is the role of filtration slits and fenestrated capillaries in the kidney?

<p>Keep large objects out of nephrons (B)</p> Signup and view all the answers

What is the primary role of the Loop of Henle in the nephron?

<p>Reabsorb water and some sodium (B)</p> Signup and view all the answers

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

<p>Help reabsorb water (B)</p> Signup and view all the answers

What does Urea do at the bottom of the Loop of Henle?

<p>Excretes nitrogen waste (A)</p> Signup and view all the answers

In which part of the nephron does the exchange of Ammonia and Bicarbonate occur?

<p>Distal Convoluted Tubule (DCT) (D)</p> Signup and view all the answers

What stimulates the release of Aldosterone in the nephron?

<p>Angiotensin 2 or increased potassium levels (C)</p> Signup and view all the answers

How does Anti-diuretic hormone (ADH) affect water reabsorption in the kidneys?

<p>Increase water reabsorption (A)</p> Signup and view all the answers

Which hormone influences calcitriol and results in higher calcium levels in the blood?

<p>Parathyroid hormone (PTH) (D)</p> Signup and view all the answers

What is the impact of Baroreceptors signaling a sympathetic response regarding urine production?

<p>Decreased urine production (D)</p> Signup and view all the answers

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