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Questions and Answers
What is the name of the excretory structure found in invertebrates?
What is the name of the excretory structure found in invertebrates?
- Nephridium (correct)
- Malpighian tubules
- Metanephridium
- Nephron
The excretory system eliminates body wastes and maintains fluid ______.
The excretory system eliminates body wastes and maintains fluid ______.
balance
What is the main function of the excretory system?
What is the main function of the excretory system?
- To produce hormones
- To digest food
- To regulate body temperature
- To maintain fluid balance in the body (correct)
What is the main function of the excretory system?
What is the main function of the excretory system?
What is the function of the proto-nephridium in flatworms?
What is the function of the proto-nephridium in flatworms?
True or false: The excretory systems of invertebrates and vertebrates are identical in structure.
True or false: The excretory systems of invertebrates and vertebrates are identical in structure.
True or false: The excretory system only eliminates liquid waste from the body.
True or false: The excretory system only eliminates liquid waste from the body.
What is the function of Malpighian tubules in animals with open circulatory systems?
What is the function of Malpighian tubules in animals with open circulatory systems?
What is the most expensive organ to maintain in the body?
What is the most expensive organ to maintain in the body?
There are different forms of nitrogenous wastes in the ______ kingdom.
There are different forms of nitrogenous wastes in the ______ kingdom.
True or false: Malpighian tubules in animals with open circulatory systems eliminate wastes through the nephridium.
True or false: Malpighian tubules in animals with open circulatory systems eliminate wastes through the nephridium.
Which excretory structure in flatworms is primarily responsible for osmoregulation?
Which excretory structure in flatworms is primarily responsible for osmoregulation?
Which of the following is NOT a form of nitrogenous waste found in animals?
Which of the following is NOT a form of nitrogenous waste found in animals?
True or false: All animals eliminate the same type of nitrogenous waste.
True or false: All animals eliminate the same type of nitrogenous waste.
What type of excretory system do annelids have?
What type of excretory system do annelids have?
What is the role of electrolyte homeostasis in the body?
What is the role of electrolyte homeostasis in the body?
True or false: The excretory system has no role in maintaining fluid balance.
True or false: The excretory system has no role in maintaining fluid balance.
In animals with open circulatory systems, what structure eliminates wastes through the anus?
In animals with open circulatory systems, what structure eliminates wastes through the anus?
Electrolyte homeostasis controls osmosis and the excretory system re-establishes ______.
Electrolyte homeostasis controls osmosis and the excretory system re-establishes ______.
What is the relationship between electrolyte homeostasis and osmosis?
What is the relationship between electrolyte homeostasis and osmosis?
True or false: Annelids have a metanephridium that functions similarly to the nephron in vertebrates.
True or false: Annelids have a metanephridium that functions similarly to the nephron in vertebrates.
True or false: The kidney is the least expensive organ to maintain in the body.
True or false: The kidney is the least expensive organ to maintain in the body.
What is the primary metabolic waste in the body?
What is the primary metabolic waste in the body?
Which organ is the most expensive to maintain in the body?
Which organ is the most expensive to maintain in the body?
What excretory structure do annelids have in association with blood capillaries?
What excretory structure do annelids have in association with blood capillaries?
What are the two types of nephrons found in the kidneys of mammals?
What are the two types of nephrons found in the kidneys of mammals?
Osmoregulation is metabolically expensive, and the kidney is the most expensive organ to ______.
Osmoregulation is metabolically expensive, and the kidney is the most expensive organ to ______.
True or false: Both cortical and juxtamedullary nephrons are found in the Bowman's capsule.
True or false: Both cortical and juxtamedullary nephrons are found in the Bowman's capsule.
The metabolic cost of osmoregulation increases with the difference between the osmolarity of body fluids and the ______.
The metabolic cost of osmoregulation increases with the difference between the osmolarity of body fluids and the ______.
What factor affects the metabolic cost of osmoregulation?
What factor affects the metabolic cost of osmoregulation?
True or false: The mammalian kidney produces one liter of urine per minute.
True or false: The mammalian kidney produces one liter of urine per minute.
How do fish eliminate ammonia from their bodies?
How do fish eliminate ammonia from their bodies?
What are the two types of nephrons found in the kidneys?
What are the two types of nephrons found in the kidneys?
True or false: The metabolic cost of osmoregulation is not affected by the difference between body fluid osmolarity and the environment.
True or false: The metabolic cost of osmoregulation is not affected by the difference between body fluid osmolarity and the environment.
What is the rate of urine production in the mammalian kidney?
What is the rate of urine production in the mammalian kidney?
Freshwater and terrestrial animals are ______, while some marine animals are osmoconformers.
Freshwater and terrestrial animals are ______, while some marine animals are osmoconformers.
Which animals are osmoregulators?
Which animals are osmoregulators?
What is the difference between osmoregulators and osmoconformers?
What is the difference between osmoregulators and osmoconformers?
True or false: All marine animals are osmoconformers.
True or false: All marine animals are osmoconformers.
What is the function of the vasa recta capillaries in the kidney?
What is the function of the vasa recta capillaries in the kidney?
How much urine does the mammalian kidney produce per minute?
How much urine does the mammalian kidney produce per minute?
True or false: The filtrate in the Bowman's capsule flows through the proximal convoluted tubule, loop of Henle, and distal convoluted tubule in that order.
True or false: The filtrate in the Bowman's capsule flows through the proximal convoluted tubule, loop of Henle, and distal convoluted tubule in that order.
Fish gills maintain electrolyte balance and eliminate ______ wastes.
Fish gills maintain electrolyte balance and eliminate ______ wastes.
What is the hyperosmotic environment created by the diffusion of urea out of the filtrate in the kidney?
What is the hyperosmotic environment created by the diffusion of urea out of the filtrate in the kidney?
True or false: Fish gills play no role in maintaining electrolyte balance.
True or false: Fish gills play no role in maintaining electrolyte balance.
What is the name of the structure through which the filtrate contained in Bowman's capsule flows?
What is the name of the structure through which the filtrate contained in Bowman's capsule flows?
What is the disadvantage of converting ammonia into urea or uric acid?
What is the disadvantage of converting ammonia into urea or uric acid?
What is the function of fish gills in electrolyte balance?
What is the function of fish gills in electrolyte balance?
True or false: The metabolic costs of the nephron are not apparent in the recapture of solutes and water.
True or false: The metabolic costs of the nephron are not apparent in the recapture of solutes and water.
Which nitrogenous waste is quickly eliminated by fish?
Which nitrogenous waste is quickly eliminated by fish?
True or false: Urea diffuses out of the filtrate into the surrounding interstitial fluid, creating a hypotonic environment.
True or false: Urea diffuses out of the filtrate into the surrounding interstitial fluid, creating a hypotonic environment.
What is the source of blood supply to the kidney?
What is the source of blood supply to the kidney?
Nitrogenous wastes are the body's principal metabolic waste, and ammonia is quickly eliminated by ______.
Nitrogenous wastes are the body's principal metabolic waste, and ammonia is quickly eliminated by ______.
What is the purpose of the recapture of solutes and water in the nephron?
What is the purpose of the recapture of solutes and water in the nephron?
True or false: Ammonia is not quickly eliminated by fish.
True or false: Ammonia is not quickly eliminated by fish.
What is the benefit of uric acid?
What is the benefit of uric acid?
How do non-aquatic animals excrete nitrogenous wastes?
How do non-aquatic animals excrete nitrogenous wastes?
True or false: The vasa recta capillaries recapture water drawn out of the tubule and collecting duct.
True or false: The vasa recta capillaries recapture water drawn out of the tubule and collecting duct.
True or false: Non-aquatic animals convert ammonia into uric acid because it requires less water to excrete.
True or false: Non-aquatic animals convert ammonia into uric acid because it requires less water to excrete.
What is the relationship between the metabolic cost of osmoregulation and the difference between the osmolarity of body fluids and the environment?
What is the relationship between the metabolic cost of osmoregulation and the difference between the osmolarity of body fluids and the environment?
Non-aquatic animals convert ammonia into urea or uric acid, which requires significant water to ______.
Non-aquatic animals convert ammonia into urea or uric acid, which requires significant water to ______.
What structure recaptures water drawn out of the tubule and collecting duct?
What structure recaptures water drawn out of the tubule and collecting duct?
What is the function of the nephridium in invertebrates?
What is the function of the nephridium in invertebrates?
What carries blood free of metabolic wastes back to the circulatory system?
What carries blood free of metabolic wastes back to the circulatory system?
True or false: The renal vein carries blood free of metabolic wastes back to the circulatory system.
True or false: The renal vein carries blood free of metabolic wastes back to the circulatory system.
What are the different forms of nitrogenous wastes found in the animal kingdom?
What are the different forms of nitrogenous wastes found in the animal kingdom?
What is the path of the filtrate in the kidney?
What is the path of the filtrate in the kidney?
Uric acid was once considered agricultural gold and was a reliable source of additional ______ inputs.
Uric acid was once considered agricultural gold and was a reliable source of additional ______ inputs.
What was the historical significance of uric acid?
What was the historical significance of uric acid?
True or false: Uric acid is no longer considered a valuable source of nitrogen for agriculture.
True or false: Uric acid is no longer considered a valuable source of nitrogen for agriculture.
Study Notes
- The excretory system eliminates body wastes and maintains fluid balance.
- There are different forms of nitrogenous wastes in the animal kingdom.
- Electrolyte homeostasis controls osmosis and the excretory system re-establishes it.
- Osmoregulation is metabolically expensive, and the kidney is the most expensive organ to maintain.
- The metabolic cost of osmoregulation increases with the difference between the osmolarity of body fluids and the environment.
- Freshwater and terrestrial animals are osmoregulators, while some marine animals are osmoconformers.
- Fish gills maintain electrolyte balance and eliminate nitrogenous wastes.
- Nitrogenous wastes are the body's principal metabolic waste, and ammonia is quickly eliminated by fish.
- Non-aquatic animals convert ammonia into urea or uric acid, which requires significant water to excrete.
- Uric acid was once considered agricultural gold and was a reliable source of additional nitrogen inputs.
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Description
Test your knowledge of the excretory system and osmoregulation with our quiz! Explore the different forms of nitrogenous wastes found in animals, learn about electrolyte homeostasis and the kidney, and discover the metabolic costs of osmoregulation. From fish gills to uric acid, this quiz covers it all. Challenge yourself with 10 questions and find out how much you really know about the body's waste elimination and fluid balance processes.
