Renal System Processes Overview

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Questions and Answers

What is the function of glomerular filtration?

  • Moving waste materials into the filtrate
  • Forming filtrate in the kidneys (correct)
  • Reabsorbing water and solutes
  • Returning important substances to the body

Which process involves returning important substances from the filtrate back to the body?

  • Solutes Reabsorption
  • Tubular Reabsorption (correct)
  • Tubular Secretion
  • Glomerular Filtration

Where do most blood solutes move during glomerular filtration?

  • Back into the glomerular capillaries
  • Into the blood vessels
  • Into the renal tubule
  • Into the glomerular capsule (correct)

What happens during tubular secretion?

<p>Waste materials from the blood are moved into the filtrate (C)</p> Signup and view all the answers

Which process involves almost all water and solutes being reabsorbed and returned to the blood?

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

What is the main hormone responsible for releasing glucose via gluconeogenesis and glycogenolysis in the post-absorptive state?

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

Which division of the autonomic nervous system is responsible for stimulating lipolysis and glycogen breakdown in the post-absorptive state?

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

What is the primary way heat is lost through the conversion of water to gas?

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

Which part of the brain is responsible for regulating heat loss and gain?

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

What mechanism involves the constriction of cutaneous blood vessels to decrease heat loss at the body's surface?

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

How does a fever contribute to inhibiting bacterial growth?

<p>By increasing metabolic rate (A)</p> Signup and view all the answers

Which hormone is responsible for increasing blood glucose levels by promoting gluconeogenesis during stress?

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

What is the primary metabolic fate of fructose and galactose in hepatocytes?

<p>Immediate ATP production (B)</p> Signup and view all the answers

During fasting, what is the livers primary action on blood glucose levels?

<p>Raising blood glucose by breaking down glycogen (A)</p> Signup and view all the answers

Which hormone is responsible for facilitating the storage of glucose as glycogen in the liver?

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

What is the primary function of glucagon when blood glucose levels decrease?

<p>Stimulates breakdown of glycogen (A)</p> Signup and view all the answers

Which type of lipoprotein carries cholesterol that accumulates as plaque in blood vessels?

<p>Low-density lipoprotein (LDL) (A)</p> Signup and view all the answers

What is the primary role of high-density lipoproteins (HDL) in lipid metabolism?

<p>Pick up excess cholesterol and return it to the liver (D)</p> Signup and view all the answers

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