The Essential Functions of Kidneys
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Questions and Answers

Which organ is responsible for processing blood plasma and excreting urine?

  • Stomach
  • Lungs
  • Liver
  • Kidneys (correct)

What is the main function of the kidneys?

  • Producing hormones
  • Maintaining homeostasis (correct)
  • Regulating body temperature
  • Digesting food

Which of the following is NOT regulated by the kidneys?

  • Hormonal secretion
  • Blood sugar levels (correct)
  • Fluid-electrolyte balance
  • Acid-base balance

What is the basic functional unit of the kidney?

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

Which process involves the movement of water and protein-free solutes from the glomerular blood plasma into the capsular space?

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

Which process involves the movement of molecules out of the various segments of the tubule and into the peritubular blood?

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

Which process involves the movement of molecules out of the peritubular blood and into the tubule for excretion?

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

What is formed after the filtrate moves through the main processes of the nephron?

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

What does the kidney selectively filter out of the plasma?

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

What does the kidney reabsorb before the filtrate becomes urine?

<p>What the body needs (A)</p> Signup and view all the answers

Which of the following substances is NOT regulated by the kidneys?

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

What is the primary function of the nephron?

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

Which hormone is NOT regulated by the kidneys?

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

What happens during tubular reabsorption?

<p>Movement of molecules out of the tubule and into the peritubular blood (C)</p> Signup and view all the answers

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

<p>Filtering harmful substances (D)</p> Signup and view all the answers

What is the final product of the main processes of the nephron?

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

Which of the following is NOT a volume measured in the formation of urine?

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

What is the role of the kidneys in maintaining fluid-electrolyte balance?

<p>Regulating the excretion of electrolytes (C)</p> Signup and view all the answers

What happens during tubular secretion?

<p>Movement of molecules out of the peritubular blood and into the tubule (A)</p> Signup and view all the answers

Which of the following is NOT a role of the kidneys in maintaining homeostasis?

<p>Regulating body temperature (C)</p> Signup and view all the answers

Flashcards

Kidney Function

Maintaining homeostasis by filtering blood, creating urine, and regulating electrolytes.

Nephron

The basic functional unit of the kidney, responsible for filtering blood and forming urine.

Filtration

Movement of water and small molecules from blood into Bowman's capsule.

Tubular Reabsorption

Movement of valuable substances (water, nutrients) back into the blood from the filtrate.

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Tubular Secretion

Movement of waste products from the blood into the filtrate to be excreted.

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Urine Formation

The result of filtration, reabsorption, and secretion in the nephron, ultimately forming urine.

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Fluid-Electrolyte Balance

Maintaining the proper balance of fluids and electrolytes in the body.

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Blood Plasma Filtration

Kidneys selectively filter out of plasma everything except some proteins.

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Reabsorption in Kidney

The kidneys reabsorb necessary molecules into the blood from the filtrate.

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Homeostasis in Kidneys

The kidneys are critical for maintaining a stable internal environment.

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Blood Sugar Regulation by Kidneys

Blood sugar levels are not primarily regulated by the kidneys.

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Calcium Regulation

Kidneys are involved in calcium balance, but it's not a primary function.

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Primary Function of Nephron

Filtration of blood and production of urine.

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Hormone Insulin and Kidneys

Kidney function and insulin regulation do not directly connect.

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Tubular Reabsorption Process

Movement of necessary things from the filtrate to blood.

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Kidney Function and Filtration

Kidneys filter harmful substances from blood.

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Tubular Secretion Actions

Removal of substances from the blood into the filtrate.

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Kidney and Homeostasis (Temperature)

Kidneys do not regulate body temperature directly.

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