20 Questions
Which of the following is NOT a nitrogenous waste excreted by animals?
Carbon dioxide
Which of the following is NOT a common excretory organ in animals?
Gills
What is the functional unit of the kidney?
Nephron
Which part of the nephron is responsible for filtration?
Glomerulus
How much blood is filtered by the glomerulus per minute?
1200 ml
What is the role of JGA in the excretory system?
Regulation of GFR
What is the role of the renal tubule in urine formation?
Reabsorption
What is the role of the proximal convoluted tubule in the nephron?
Reabsorption
What is the role of the distal convoluted tubule in the nephron?
Secretion
What is the role of the collecting duct in the nephron?
Transport of urine
Where does the majority of reabsorption and selective secretion take place?
PCT
What is the function of the loop of Henle?
Maintain osmolar gradient
Which substances could be secreted into the filtrate by the tubules?
NH3 and urea
What is the function of the vasa recta?
Reabsorb water and electrolytes
What is the function of the distal convoluted tubule (DCT) and collecting duct?
Reabsorb water and electrolytes
What happens to the filtrate as it moves down the descending limb of the loop of Henle?
It gets concentrated
What happens to the filtrate as it moves up the ascending limb of the loop of Henle?
It gets diluted
What is the purpose of the counter current mechanism between the loop of Henle and vasa recta?
Maintain osmolar gradient
What is the function of the urinary bladder?
Store urine
Which organs assist in excretion?
Skin, lungs, and liver
Test your knowledge on nitrogenous waste excretion in animals with this quiz! Learn about the different types of nitrogenous wastes and the organs involved in their excretion, such as protonephridia, nephridia, malpighian tubules, green glands, and kidneys.
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