Nephrons (Leaving Cert Biology): Quizzes
📚Quizzes
Practise the questions
13 questions from this quiz
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Practise the questions
13 questions from this quiz
How many nephrons does each kidney contain?
How many nephrons does each kidney contain?
Over one million
What is the approximate length of a single nephron?
What is the approximate length of a single nephron?
3 centimetres
What is the function of Bowman's capsule?
What is the function of Bowman's capsule?
Initial filtration occurs
Which part of the nephron performs most of the reabsorption work?
Which part of the nephron performs most of the reabsorption work?
Proximal convoluted tubule
What property does the ascending limb of the loop of Henle have?
What property does the ascending limb of the loop of Henle have?
Allows salt out, blocks water
Which blood vessel brings blood into the glomerulus?
Which blood vessel brings blood into the glomerulus?
Afferent arteriole
Where does filtration take place in the nephron?
Where does filtration take place in the nephron?
Glomerulus within Bowman's capsule
How much glomerular filtrate is produced every 24 hours?
How much glomerular filtrate is produced every 24 hours?
About 180 litres
Which molecules are prevented from being filtered in the glomerulus?
Which molecules are prevented from being filtered in the glomerulus?
Proteins & blood cells
What percentage of glomerular filtrate is reabsorbed?
What percentage of glomerular filtrate is reabsorbed?
Approximately 99%
Which substances are completely recovered in the proximal convoluted tubule?
Which substances are completely recovered in the proximal convoluted tubule?
Glucose, amino acids & vitamins
What does the descending limb of the loop of Henle allow to pass through?
What does the descending limb of the loop of Henle allow to pass through?
Water
How does glomerular filtrate differ from final urine?
How does glomerular filtrate differ from final urine?
Filtrate more dilute with useful molecules