Gr 9 NATURAL SCIENCES: CH 1.2 The excretory system
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Questions and Answers

What is the primary function of the excretory system?

  • To produce hormones
  • To aid in digestion
  • To regulate body temperature
  • To remove metabolic waste products (correct)

    • Which of the following waste products is formed from the breakdown of proteins in the liver?

  • Glucose
  • Insulin
  • Carbon dioxide
  • Urea (correct)

    • Where are the kidneys located?

  • In the pelvis region
  • In the abdominal cavity
  • On either side of the spine, just below the ribcage (correct)
  • On either side of the heart

    • What is the function of the ureters?

    <p>To transport urine from the kidneys to the bladder</p> Signup and view all the answers

    What is the approximate length of each ureter?

    <p>25-30 cm</p> Signup and view all the answers

    What is the function of the bladder?

    <p>To store urine</p> Signup and view all the answers

    How much urine can the bladder hold?

    <p>300-500 ml</p> Signup and view all the answers

    What is the function of the urethra in males?

    <p>For urination and semen ejaculation</p> Signup and view all the answers

    What is the process by which the kidneys filter blood?

    <p>Filtration</p> Signup and view all the answers

    What is the term for the muscular contractions that propel urine downward through the ureters?

    <p>Peristalsis</p> Signup and view all the answers

    What is the primary function of the glomerulus in the nephron?

    <p>Filtration of blood to remove waste products</p> Signup and view all the answers

    What is the purpose of reabsorption in the nephron?

    <p>To retain necessary nutrients and maintain fluid balance</p> Signup and view all the answers

    What is the function of the renal tubules in the nephron?

    <p>Reabsorption of essential substances</p> Signup and view all the answers

    What is the result of kidney failure?

    <p>A buildup of waste products and fluids in the body</p> Signup and view all the answers

    What is the cause of glomerulonephritis?

    <p>Infections, autoimmune diseases, or other underlying health conditions</p> Signup and view all the answers

    What is a common symptom of bladder infections?

    <p>Frequent urge to urinate</p> Signup and view all the answers

    What is the primary function of the collecting ducts in the nephron?

    <p>Funneling of urine into the renal pelvis</p> Signup and view all the answers

    What is the treatment for PKD?

    <p>Treatments to manage symptoms and slow disease progression</p> Signup and view all the answers

    What is the result of kidney stones forming in the kidneys?

    <p>Severe pain when passing through the urinary tract</p> Signup and view all the answers

    What is essential for supporting the excretory system's health?

    <p>Regular hydration and a balanced diet</p> Signup and view all the answers

    What is the primary function of the glomerulus in the nephron?

    <p>Filtering blood to remove waste products</p> Signup and view all the answers

    What is the purpose of the renal tubules in the nephron?

    <p>Reabsorbing essential substances back into the bloodstream</p> Signup and view all the answers

    What is the result of acute kidney injury?

    <p>Kidney failure</p> Signup and view all the answers

    What is the primary cause of bladder infections?

    <p>Bacteria entering the bladder</p> Signup and view all the answers

    What is the function of the collecting ducts in the nephron?

    <p>Funneling urine into the renal pelvis</p> Signup and view all the answers

    What is a common symptom of kidney stones?

    <p>Severe pain when passing through the urinary tract</p> Signup and view all the answers

    What is the treatment for glomerulonephritis?

    <p>Addressing the underlying cause and managing symptoms</p> Signup and view all the answers

    What is the characteristic of Polycystic Kidney Disease (PKD)?

    <p>Growth of numerous cysts in the kidneys</p> Signup and view all the answers

    What is the primary function of the urethra?

    <p>Expelling urine from the body</p> Signup and view all the answers

    What is the result of kidney failure?

    <p>Buildup of waste products and fluids in the body</p> Signup and view all the answers

    Which of the following is a by-product of cellular respiration that the excretory system removes?

    <p>Carbon dioxide</p> Signup and view all the answers

    What is the main function of the kidneys in maintaining fluid and electrolyte balance?

    <p>Filtering blood to remove waste products</p> Signup and view all the answers

    Which of the following organs is responsible for storing urine until it is ready to be excreted?

    <p>Bladder</p> Signup and view all the answers

    What is the term for the process by which the kidneys filter blood to remove waste products?

    <p>Filtration</p> Signup and view all the answers

    Which of the following is a function of the smooth muscle in the bladder walls?

    <p>Contracting to expel urine during urination</p> Signup and view all the answers

    Which of the following organs connects the bladder to the exterior of the body?

    <p>Urethra</p> Signup and view all the answers

    What is the primary function of the excretory system in maintaining homeostasis?

    <p>Removing metabolic waste products</p> Signup and view all the answers

    Which of the following is a function of the kidneys in maintaining blood pressure regulation?

    <p>Producing hormones to regulate blood pressure</p> Signup and view all the answers

    What is the term for the muscular contractions that propel urine downward through the ureters?

    <p>Peristalsis</p> Signup and view all the answers

    Which of the following organs is responsible for removing waste products and excess substances from the blood?

    <p>Kidneys</p> Signup and view all the answers

    What is the primary purpose of reabsorption in the renal tubules of the nephron?

    <p>To retain essential nutrients and maintain fluid balance</p> Signup and view all the answers

    Which of the following health issues is characterized by the growth of numerous cysts in the kidneys?

    <p>Polycystic Kidney Disease (PKD)</p> Signup and view all the answers

    What is the result of the kidneys losing their ability to filter blood effectively?

    <p>Kidney Failure</p> Signup and view all the answers

    What is the term for the process by which the kidneys filter blood to remove waste products?

    <p>Filtration</p> Signup and view all the answers

    Which of the following is a treatment option for kidney failure?

    <p>Dialysis</p> Signup and view all the answers

    What is the purpose of the collecting ducts in the nephron?

    <p>To funnel the final urine into the renal pelvis</p> Signup and view all the answers

    What is the cause of glomerulonephritis?

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

    What is the result of bladder infections?

    <p>Inflammation and symptoms such as frequent urination</p> Signup and view all the answers

    What is essential for supporting the excretory system's health?

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

    What is the characteristic of Polycystic Kidney Disease (PKD)?

    <p>The growth of numerous cysts in the kidneys</p> Signup and view all the answers

    What is the primary way in which the excretory system maintains homeostasis?

    <p>By maintaining fluid and electrolyte balance</p> Signup and view all the answers

    What is the functional unit of the kidney responsible for?

    <p>Filtering blood to remove waste products</p> Signup and view all the answers

    What is the result of the kidneys' failure to remove waste products from the blood?

    <p>Waste products accumulate to harmful levels</p> Signup and view all the answers

    What is the primary function of the muscular walls of the ureters?

    <p>To propel urine downward through peristalsis</p> Signup and view all the answers

    What is the role of the smooth muscle in the bladder walls?

    <p>To contract during urination to expel urine</p> Signup and view all the answers

    What is the primary function of the excretory system in regulating blood pressure?

    <p>To constrict or dilate blood vessels</p> Signup and view all the answers

    What is the by-product of cellular respiration that the excretory system removes?

    <p>Carbon dioxide</p> Signup and view all the answers

    What is the primary function of the nephron?

    <p>To filter blood to remove waste products</p> Signup and view all the answers

    What is the result of the excretory system's failure to regulate fluid and electrolyte balance?

    <p>Fluid and electrolyte imbalance occurs</p> Signup and view all the answers

    What is the organ that connects the bladder to the exterior of the body?

    <p>Urethra</p> Signup and view all the answers

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