Biology Chapter on Kidney and Waste Management
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Questions and Answers

An elastic, muscular organ that holds urine until it leaves the body

  • Urethra
  • Nephron
  • Ureter
  • Renal pelvis
  • Bladder (correct)

When comparing the blood concentrations of urea and oxygen in the renal artery to those in the renal vein, one finds that in the renal artery..

  • urea is higher and oxygen is higher.
  • urea is higher and oxygen is lower.
  • urea is lower and oxygen is lower.
  • urea is lower and oxygen is higher. (correct)

Which substance would normally be found in higher concentration in urine than in blood?

  • Glucose.
  • Protein.
  • Urea. (correct)
  • Oxygen.

Antidiuretic hormone has a DIRECT effect on the

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

Aldosterone is secreted by the

<p>Adrenal gland. (A)</p> Signup and view all the answers

Sweat contains:

<p>Water, salt and ammonia (B)</p> Signup and view all the answers

Which of the following is a disorder of the kidneys in which the functional unit of the kidneys become inflamed or damaged?

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

Which organ filters blood and maintains the homeostasis of body fluids?

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

Antidiuretic hormone is produced by the

<p>Pituitary gland. (D)</p> Signup and view all the answers

Which of the following would cause the kidney to produce more concentrated urine?

<p>Decreased ADH secretion. (B)</p> Signup and view all the answers

A blockage in a urethra would interfere with

<p>urine leaving the body (B)</p> Signup and view all the answers

The ____ is involved in the reabsorption of water in the kidney

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

Which organ converts ammonia to urea?

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

What part of the nephron is located between the proximal convoluted tubule and the distal convoluted tubule?

<p>loop of Henle (D)</p> Signup and view all the answers

____ is the primary (first) nitrogenous end product of breaking down amino acids?

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

Which substance is NOT a metabolic waste in humans?

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

In a healthy person, Bowman's capsules are found in the

<p>renal cortex. (A)</p> Signup and view all the answers

If the blood becomes acidic, the kidneys will maintain homeostasis by actively excreting

<p>hydrogen ions. (A)</p> Signup and view all the answers

When the level of ADH increases in the blood,

<p>More water is reabsorbed in the blood and urine output increases. (B)</p> Signup and view all the answers

What name is given to the tiny filtering units that make up each kidney?

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

An increase in the amount of circulating ADH will lead to

<p>an increase in the concentration of urine produced (B)</p> Signup and view all the answers

Which structure excretes carbon dioxide from the body?

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

Which of the following is NOT a nitrogenous waste product?

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

The function of the ureter is to

<p>transport urine from the kidney. (D)</p> Signup and view all the answers

The function of dialysis is to

<p>All the answers are correct. (C)</p> Signup and view all the answers

ADH is stored in

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

Glucose in urine is the main sign of

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

Which of the following processes correctly describes the processing of nitrogenous wastes in humans?

<p>Converted from ammonia to urea in the liver (C)</p> Signup and view all the answers

Excretion can be defined as the removal of

<p>Metabolic wastes from the body. (B)</p> Signup and view all the answers

What is the name of the circular muscle that controls the flow of urine from the body?

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

In addition to water, the principal components of urine are

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

Increase in blood pressure can be the result of

<p>Increased blood volume. (B)</p> Signup and view all the answers

Low blood volume will result in

<p>Increased secretion of ADH and a decrease in aldosterone. (D)</p> Signup and view all the answers

Which of the following glands produces aldosterone?

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

Using the diagram above, which produces ADH?

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

Which of these is the correct sequence of urine moving through the urinary system

<p>Kidneys ureters bladder urethra (C)</p> Signup and view all the answers

Which is not true regarding kidneys?

<p>Both kidneys are needed to survive. (B)</p> Signup and view all the answers

How many nephrons are contained in each kidney?

<p>about a million (A)</p> Signup and view all the answers

Which substance is not found in the proximal convoluted tube of a healthy individual?

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

Which of the following is not a characteristic of the glomerulus?

<p>It is composed of small vessels. (A)</p> Signup and view all the answers

The composition of the filtrate in the Bowman's capsule is determined by

<p>molecular size. (A)</p> Signup and view all the answers

Movement of fluids from the glomerulus to Bowman's capsule is due to

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

Which of the following is a process that involves filling the abdominal cavity with fluid that absorbs metabolic waste? This can be done from home.

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

Which of the following would cause increased water reabsorption by the kidneys into the blood?

<p>Decreased blood pressure (B)</p> Signup and view all the answers

Which of the following is produced in response to a high solute (salt) concentration in the blood?

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

Which of the following hormones is released depending on the kidney detecting a change in a person's blood pressure?

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

Why are females more prone to urinary bladder?

<p>In females the urethra is shorter (C)</p> Signup and view all the answers

Which of the following symptoms might be an indication of kidney failure?

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

Which of the following is a process that involves passing blood through a machine that functions as a kidney?

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

Blood in the kidney is filtered in the

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

Which of the following would not be found in high concentration in the urine of a healthy individual?

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

Which organs are involved in the elimination of mineral salts? Circle all that apply.

<p>Kidney (A), Intestines (B), Liver (C), Lungs (D), Skin (E)</p> Signup and view all the answers

Which organ is responsible for osmoregulation?

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

Which of the following is NOT a function of the organ shown?

<p>to regulate temperature (E)</p> Signup and view all the answers

Alcohol limits the release of ADH. Therefore, results in... CIRLCLE ALL THAT APPLY

<p>More concentrated urine. (B), Decreased volume of urine. (C)</p> Signup and view all the answers

What causes kidney stones?

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

Which of the following is NOT a treatment for kidney stones?

<p>increasing the acidity of the patient's urine (A)</p> Signup and view all the answers

The loop of Henle is the site that ____ occurs

<p>reabsorption or absorption</p> Signup and view all the answers

The convoluted tubules and the collecting duct are the sites that ____ occurs

<p>reabsorption or absorption</p> Signup and view all the answers

Deamination take place in the:

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

If the hormone HCG is detected in a urinalysis would most likely indicate:

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

Blood in a urinalysis test could indicate which of the following:

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

Flashcards

What is the bladder?

The elastic muscular organ that temporarily stores urine before it is expelled from the body.

How do urea and oxygen concentrations differ in renal artery and vein?

Urea concentration is higher in the renal artery compared to the renal vein, while oxygen concentration is lower.

Which substance is found in higher concentration in urine than blood?

Urea is a nitrogenous waste product that is filtered out by the kidneys and excreted in urine.

What is the direct effect of ADH?

Antidiuretic hormone (ADH) directly affects the kidneys, regulating water reabsorption.

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Where is aldosterone secreted?

Aldosterone, a hormone responsible for regulating salt and water balance, is produced by the adrenal glands.

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What does sweat contain?

Sweat contains water, salt, and ammonia.

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What is nephritis?

Nephritis refers to inflammation or damage to the functional units of the kidneys, called nephrons.

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What organ filters blood and maintains fluid balance?

The kidneys are responsible for filtering blood, removing waste products, and maintaining fluid balance.

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Where is ADH produced and stored?

Antidiuretic hormone (ADH) is produced in the hypothalamus and stored and released by the pituitary gland.

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What would cause the production of less concentrated urine?

Decreased ADH secretion leads to less water reabsorption, resulting in more dilute urine.

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What happens when the urethra is blocked?

A blockage in the urethra would prevent urine from leaving the body.

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Which part of the nephron is involved in water reabsorption?

The loop of Henle is involved in the reabsorption of water in the kidney.

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Which organ converts ammonia to urea?

The liver converts toxic ammonia to less harmful urea.

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What is the part of the nephron between the proximal and distal tubules?

The loop of Henle is the portion of the nephron located between the proximal and distal convoluted tubules.

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What is the primary nitrogenous waste product from amino acid breakdown?

Ammonia (NH3) is the primary nitrogenous waste product formed from the breakdown of amino acids.

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Which substance is NOT a metabolic waste in humans?

Oxygen is essential for cellular respiration, while the other substances are waste products.

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Where are Bowman's capsules found?

Bowman's capsules are found in the renal cortex of the kidney.

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What do the kidneys excrete when blood becomes acidic?

To maintain blood pH balance, the kidneys excrete excess hydrogen ions into the urine.

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What happens when ADH levels increase?

Increased ADH levels promote water reabsorption, leading to more concentrated urine and reduced urine output.

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What are the tiny filtering units within each kidney called?

The tiny filtering units within each kidney, responsible for filtering blood and forming urine, are called nephrons.

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What does increased ADH lead to?

Increased ADH results in more concentrated urine due to increased water reabsorption.

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Which organ excretes carbon dioxide from the body?

The lungs are responsible for eliminating carbon dioxide from the body.

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Which is NOT a nitrogenous waste product?

Sodium chloride is a salt, not a nitrogenous waste product.

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What is the function of ureters?

The ureters transport urine from the kidneys to the bladder.

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What is the function of dialysis?

Dialysis functions as an artificial kidney, removing metabolic waste and excess fluids from the blood.

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Where is ADH stored?

ADH is stored in the posterior pituitary gland.

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What does glucose in urine indicate?

The presence of glucose in urine is a primary indicator of diabetes.

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How are nitrogenous wastes processed in humans?

Ammonia is converted to urea in the liver.

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What is excretion?

Excretion is the process of removing metabolic waste products from the body.

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What controls the flow of urine from the body?

The sphincter muscle, a circular muscle, controls the flow of urine from the bladder.

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What are the main components of urine?

The main components of urine, besides water, are urea and salts.

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What can cause increased blood pressure?

Increased blood volume leads to increased blood pressure due to increased fluid volume.

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How does the body respond to low blood volume?

Low blood volume triggers the secretion of aldosterone, which promotes water reabsorption and sodium retention, increasing blood volume.

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Which gland produces aldosterone?

The adrenal gland (labeled X) produces aldosterone.

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Which gland produces ADH?

The hypothalamus (labeled W) produces ADH.

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What is the correct order of urine flow through the urinary system?

The correct sequence of urine flow through the urinary system is: kidneys, ureters, bladder, urethra.

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Which of the following is not true regarding kidneys?

Both kidneys are essential for survival.

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How many nephrons are in each kidney?

Each kidney contains about a million nephrons.

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Which substance is not found in the proximal convoluted tubule?

Proteins are too large to be filtered through the glomerulus in a healthy individual.

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What is NOT a characteristic of the glomerulus?

The glomerulus is composed of small blood vessels that surround Bowman's capsule.

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What determines the composition of the filtrate in Bowman's capsule?

Filtration in the glomerulus is based on molecular size, allowing smaller molecules to pass through.

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What is the mechanism of movement from the glomerulus to Bowman's capsule?

Pressure filtration forces fluids from the glomerulus into Bowman's capsule.

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Which procedure involves filling the abdominal cavity with fluid to absorb waste?

Peritoneal dialysis involves filling the abdominal cavity with fluid that absorbs waste, and can be done at home.

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What would cause increased water reabsorption by the kidneys?

Decreased blood pressure triggers the kidneys to reabsorb more water to increase blood volume.

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Which hormone responds to high salt concentration?

Aldosterone is released in response to high sodium concentration in the blood, promoting sodium and water reabsorption.

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Which hormone is released by the kidneys in response to blood pressure changes?

Aldosterone, a hormone released by the adrenal gland, regulates blood pressure by controlling sodium and water reabsorption.

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Why are females more prone to urinary tract infections?

The urethra is shorter in females, making them more susceptible to urinary tract infections (UTIs).

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Which symptom might indicate kidney failure?

Protein in the urine can indicate kidney damage or other health problems.

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Which procedure involves passing blood through a machine to filter waste?

Hemodialysis involves passing the blood through a machine that functions as an artificial kidney to filter waste.

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Where does blood filtration occur in the kidney?

The glomerulus is the site of filtration in the kidney.

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What is not found in high concentration in the urine of a healthy individual?

Leukocytes, or white blood cells, are normally found in low numbers in urine unless there is an infection.

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Which organs are involved in the elimination of mineral salts?

The liver, kidneys, skin, lungs, and intestines are involved in eliminating mineral salts.

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Which organ is responsible for osmoregulation?

The kidneys are primarily responsible for regulating the volume and composition of body fluids, including water.

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

The organ shown is the kidney, and it is NOT responsible for regulating body temperature.

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What are the effects of alcohol on urine?

Alcohol limits ADH release, leading to less concentrated urine and an increased volume of urine.

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What causes kidney stones?

Kidney stones can be caused by insufficient water intake, certain medications, and a diet high in oxalate.

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Which of the following is NOT a treatment for kidney stones?

Treatment for kidney stones includes surgery, sound or light methods to break the stones, medication, and sometimes increasing the acidity of urine.

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Where does reabsorption and secretion occur?

Reabsorption and secretion occur in the loop of Henle.

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Where does reabsorption and secretion occur?

Reabsorption and secretion occur in the convoluted tubules and collecting duct.

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Where does deamination take place?

Deamination, the process of removing the amino group from amino acids, takes place in the liver.

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What does the presence of HCG in urine indicate?

The presence of human chorionic gonadotropin (hCG) in urine is a strong indicator of pregnancy.

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What could blood in urine indicate?

Blood in urine can indicate nephritis (kidney inflammation), kidney stones, or a UTI (urinary tract infection).

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Study Notes

Multiple Choice Questions

  • Waste Management: An elastic, muscular organ that holds urine until it leaves the body is the bladder.
  • Urea and Oxygen Concentration in Renal Vessels: When comparing urea and oxygen concentrations in the renal artery to those in the renal vein, urea is higher and oxygen is lower in the renal artery.
  • Urine Composition: Urea is typically found at a higher concentration in urine compared to blood.
  • Antidiuretic Hormone (ADH) Effect: ADH directly affects the kidneys.
  • Aldosterone Secretion: Aldosterone is secreted by the adrenal gland.
  • Sweat Composition: Sweat contains water, salt, and ammonia.
  • Kidney Disorder: Nephritis is a kidney disorder where the functional units become inflamed.
  • Homeostasis Organ: Kidneys filter blood and maintain body fluid balance.
  • ADH Production: Antidiuretic hormone is produced by the hypothalamus.
  • Urine Concentration and Blood Volume: Increased blood volume causes the kidneys to produce less concentrated urine.
  • Urethra Blockage: A blockage in the urethra prevents urine from leaving the body.
  • Kidney Reabsorption: Convoluted tubules are involved in water reabsorption in the kidney.

Additional Questions

  • Ammonia to Urea Conversion: The kidney converts ammonia to urea.
  • Nephron Location: The loop of Henle is located between the proximal and distal convoluted tubules.
  • Nitrogenous Waste Product: Urea is the primary nitrogenous waste product formed from breaking down amino acids.
  • Metabolic Waste: Carbon dioxide is a metabolic waste in humans, while oxygen is not a metabolic waste in humans.
  • Bowman's Capsule Location: Bowman's capsules are found in the renal cortex.
  • Kidney Homeostasis: To maintain homeostasis, kidneys actively excrete hydrogen ions when blood becomes acidic.
  • ADH Effect on Water Reabsorption: When ADH levels increase in the blood, more water is reabsorbed, leading to decreased urine output.
  • Kidney Filtering Units: Nephrons are the tiny filtering units in the kidneys.
  • ADH and Urine Concentration: Increased ADH leads to increased urine concentration.
  • Kidney Function and Excretion: Kidneys are responsible for removing toxins and waste from the body.
  • What is the urinary bladder? The hollow, muscular organ that stores urine.
  • What is urine composition? The main components in urine are water, urea, salts, and various other wastes.
  • What is ADH? A hormone that regulates water reabsorption in the kidneys.
  • What produces aldosterone? The adrenal glands.
  • Sequence of Urine Movement through the Urinary System: Kidneys, ureters, bladder, and urethra.
  • How Many Nephrons in Each Kidney? Each kidney contains about a million nephrons.
  • What is a characteristic of a healthy kidney? A healthy kidney has no glucose in the urine.
  • Glomerular Filtration Characteristics: The glomerulus is composed of small blood vessels and surrounded by Bowman's capsule. Filtration is promoted by the high blood pressure.
  • What processes occur in the kidney? Filtration, reabsorption, and secretion to maintain a healthy concentration of blood substances.

Fill in the Blank Questions

  • Urinary System Parts (Fill in the Blanks): (Requires diagram, answer provided)
  • Kidney Parts (Fill in the Blanks): (Requires diagram, answer provided)

Long Answer Question

  • Liver's Role in Excretion: The liver plays a crucial role in converting ammonia (a toxic waste product) into urea, which is then excreted by the kidneys.

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Description

Test your knowledge on the functions of the kidneys, including urine composition, hormonal effects, and waste management. This quiz covers essential topics related to kidney disorders and homeostasis in the human body. Perfect for students studying biology or health sciences.

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