Aquatic Animals Osmoregulation Classification
34 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Where does filtration of the blood primarily occur in the kidney?

  • Proximal convoluted tubule
  • Loop of the nephron
  • Glomerular capsule (correct)
  • Collecting duct
  • Which part of the nephron is responsible for reabsorption of water and solutes?

  • Loop of the nephron
  • Collecting duct
  • Distal convoluted tubule
  • Proximal convoluted tubule (correct)
  • What is the function of the peritubular capillaries in the nephron anatomy?

  • Collection of waste products
  • Reabsorption of water and solutes (correct)
  • Transport of urine to the bladder
  • Blood filtration
  • Which blood vessel brings blood to the glomerulus in the kidneys?

    <p>Afferent arteriole</p> Signup and view all the answers

    What structure surrounds the glomerulus in a nephron?

    <p>Glomerular capsule</p> Signup and view all the answers

    In which part of the kidney are the loop of Henle and peritubular capillary network located?

    <p>Renal Medulla</p> Signup and view all the answers

    What is the function of the distal tubule in the kidney?

    <p>Regulates the K+ and NaCl concentrations of body fluids</p> Signup and view all the answers

    How does the collecting duct contribute to water conservation in the kidney?

    <p>Conducts filtrate through an osmolarity gradient to reabsorb water</p> Signup and view all the answers

    What role does urea play in the process of concentrating urine in the kidney?

    <p>Diffuses out of the collecting duct in the inner medulla</p> Signup and view all the answers

    Which part of the kidney plays a crucial role in producing urine hyperosmotic to the blood?

    <p>Thin segment of ascending limb</p> Signup and view all the answers

    What is measured by the osmolality urine test?

    <p>Concentration of particles in urine</p> Signup and view all the answers

    What might be indicated by a greater-than-normal osmolality urine test result?

    <p>Addison's disease, congestive heart failure or shock</p> Signup and view all the answers

    Which structure is responsible for the osmotic gradient that concentrates urine?

    <p>Loop of Henle</p> Signup and view all the answers

    What occurs as blood pressure forces fluid from the blood in the glomerulus into Bowman’s capsule?

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

    Where does reabsorption of water primarily occur in the kidney?

    <p>Loop of Henle</p> Signup and view all the answers

    Which region follows Bowman’s capsule in the pathway of the filtrate through a nephron?

    <p>Proximal tubule</p> Signup and view all the answers

    What contributes to the osmolarity of the interstitial fluid in the kidney?

    <p>NaCl and urea</p> Signup and view all the answers

    What brings filtered blood from the glomerulus to the rest of the kidney and back to general circulation?

    <p>Efferent arteriole</p> Signup and view all the answers

    What hormone increases water reabsorption in the distal tubules and collecting ducts of the kidney?

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

    Which hormone is responsible for regulating salt reabsorption in the kidney?

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

    What is the primary function of angiotensin II in the body?

    <p>Increases blood pressure</p> Signup and view all the answers

    Which of the following hormones decreases blood pressure by acting as a vasodilator and increasing glomerular filtration rate?

    <p>Atrial natriuretic peptide</p> Signup and view all the answers

    Which hormone is stored in the posterior pituitary and prevents water loss in the body?

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

    What process does atrial natriuretic peptide mainly affect in the kidneys?

    <p>Sodium reabsorption</p> Signup and view all the answers

    What is the term used to describe animals that can only tolerate a narrow range of salt concentrations?

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

    How do most bony fishes regulate their body fluids in relation to salt content?

    <p>By being osmoconformers</p> Signup and view all the answers

    Which nitrogenous waste product requires much less water per unit of nitrogen excreted?

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

    What is the role of flame cells in Planarians?

    <p>Excrete metabolic wastes into the environment</p> Signup and view all the answers

    How do terrestrial animals reduce water loss when excreting nitrogen wastes?

    <p>By excreting uric acid</p> Signup and view all the answers

    What is the functional unit of the mammalian kidney?

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

    NEPHRONS are composed of:

    <p><strong>A single long tubule and a ball of capillaries called the glomerulus</strong></p> Signup and view all the answers

    JuxtaCortical nephrons are associated with which part of the kidney?

    <p><strong>Renal cortex</strong></p> Signup and view all the answers

    Filtration in excretory systems refers to:

    <p><strong>Pressure-filtering of body fluids</strong></p> Signup and view all the answers

    Secretion in excretory systems involves adding:

    <p><strong>Toxins and other solutes from body fluids to the filtrate</strong></p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Browser