Which of the following processes take place at the glomerulus of a nephron?Secretion of ureaReabsorption of waterReabsorption of glucoseFiltration of blood
Question
Which of the following processes take place at the glomerulus of a nephron?
- Secretion of urea
- Reabsorption of water
- Reabsorption of glucose
- Filtration of blood
Solution
The process that takes place at the glomerulus of a nephron is the filtration of blood.
Here's a step-by-step explanation:
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Blood enters the kidney through the renal artery, which splits into many afferent arterioles.
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Each afferent arteriole leads to a structure called the glomerulus, a tiny, intertwined group of capillaries.
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The glomerulus is encased in a cup-like sac called a Bowman's capsule.
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The walls of the glomerulus and the Bowman's capsule act as a filtration barrier. They allow small molecules, waste products, and fluid to pass into the Bowman's capsule, but prevent large molecules and cells from passing through.
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This process is known as glomerular filtration and it's the first step in the formation of urine.
The other processes mentioned - secretion of urea, reabsorption of water, and reabsorption of glucose - occur later in the nephron, not in the glomerulus.
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