Urinary System Overview

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Questions and Answers

Which part of the kidney nephron is responsible for the filtration of the blood?

  • Glomerulus (correct)
  • Sphincters
  • Renal artery
  • Renal vein

What is the main function of the internal urethral sphincter in the male urinary system?

  • To release excess materials
  • To control the release of urine (correct)
  • To stimulate new RBC production
  • To increase calcium absorption

Which hormone is released by the kidney to stimulate new red blood cell (RBC) production?

  • Insulin
  • Cortisol
  • Erythropoietin (correct)
  • Vitamin D

What is the role of the urinary system in preventing a build-up of certain materials in the body?

<p>Secretion of excess materials (B)</p> Signup and view all the answers

In which part of the urinary system does reabsorption of vital nutrients, ions, and water primarily occur?

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

What is the main function of Vitamin D3 in assisting homeostasis?

<p>Increasing calcium absorption from the digestive tract (B)</p> Signup and view all the answers

Which substance stimulates the formation of Angiotensin II to assist homeostasis?

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

What is the main function of Angiotensin II in the context of the urinary system?

<p>Causing vasoconstriction to increase blood pressure (C)</p> Signup and view all the answers

Which part of the kidney is primarily responsible for the secretion of H (+1) and reabsorption of HCO3 (-1) to control acid/base conditions?

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

Where does the process of reabsorption occur in the kidney?

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

What is the function of the Afferent Arteriole in the nephron?

<p>Transports arterial blood to the glomerulus for filtration (D)</p> Signup and view all the answers

What is the main function of the Efferent Arteriole in the nephron?

<p>Transports filtered blood to the kidney venous system (D)</p> Signup and view all the answers

What is the primary function of Bowman’s Capsule in the nephron?

<p>Encloses the glomerulus and transfers filtrate toward PCT (A)</p> Signup and view all the answers

What are the main functions of the urinary system?

<p>Filtration of the blood, reabsorption of vital nutrients/ions/water, secretion of excess materials, and hormonal functions (activation of Vitamin D and release of Erythropoietin)</p> Signup and view all the answers

How does Vitamin D3 assist homeostasis in the context of the urinary system?

<p>By increasing calcium absorption from the digestive tract.</p> Signup and view all the answers

What is the role of Erythropoietin released by the kidney?

<p>To stimulate new red blood cell (RBC) production.</p> Signup and view all the answers

Where does the activation of Vitamin D primarily occur in the urinary system?

<p>In the kidney, through alpha 1 hydroxylase activity.</p> Signup and view all the answers

What are the functions of the internal urethral sphincter in the male urinary system?

<p>To control the release of urine from the bladder.</p> Signup and view all the answers

In which part of the kidney nephron does the reabsorption of vital nutrients, ions, and water primarily occur?

<p>In most parts of the kidney nephron.</p> Signup and view all the answers

What is the role of Renin in the urinary system?

<p>Stimulate the formation of Angiotensin II to cause vasoconstriction and increase blood pressure</p> Signup and view all the answers

How do Prostaglandins contribute to homeostasis in the urinary system?

<p>By dilating renal cortical blood vessels and constricting blood vessels in the renal medulla</p> Signup and view all the answers

What is the function of the juxtamedullary nephrons in the urinary system?

<p>To help regulate water balance and the concentration of urine</p> Signup and view all the answers

What is the primary role of the secretion of H (+1) and reabsorption of HCO3 (-1) in the urinary system?

<p>To control acid/base conditions in body fluids</p> Signup and view all the answers

What is the function of the Afferent Arteriole in the nephron?

<p>Transport arterial blood to the glomerulus for filtration</p> Signup and view all the answers

What is the primary function of the Glomerulus in the urinary system?

<p>To serve as the site for blood filtration</p> Signup and view all the answers

What is the function of the Proximal Convoluted Tubule (PCT) in the nephron?

<p>Actively reabsorb useful materials and operate as a nonspecific filter</p> Signup and view all the answers

What is the function of the Efferent Arteriole in the nephron?

<p>Transport filtered blood from the glomerulus and to the kidney venous system</p> Signup and view all the answers

What is the role of Vasa Recta in the urinary system?

<p>Transport blood from the glomerulus to the kidney venous system</p> Signup and view all the answers

What is the function of the Bowman’s Capsule in the nephron?

<p>To enclose the glomerulus and transfer filtrate toward the Proximal Convoluted Tubule (PCT)</p> Signup and view all the answers

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