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22 Cards in this Set
- Front
- Back
Blood is filtered at the start of... |
...nephrones |
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Label this diagram of a nephron. |
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1. Blood from the .......... artery enters smaller .......... in the .......... . |
1. renal 2. arterioles 3. cortex |
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What is the name of the structure that the arteriole splits into? Describe this structure. |
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What is the name of the arteriole that takes blood into each glomerulus? |
The afferent arteriole. |
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What is the name of the arteriole that takes blood out of each glomerulus? |
The efferent arteriole. |
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The efferent arteriole smaller in diameter than the afferent arteriole, why is this? |
So the blood in the glomerulus is under high pressure. |
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What does the high pressure in the glomerulus cause? |
It forces liquids and small particles out of the capillary and into the Bowman's capsule. |
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State and name how many layers the liquid and small molecules have to pass to get into the Bowman's capsule and enter the nephron tubule.
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What happens to larger molecules under this high pressure? |
They stay in the blood as they are too large to pass through the membranes. |
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What is the name of the liquids and small substances once it has passed into the nephron tubule? |
Filtrate. |
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What areas of the nephron does selective reabsorption take place? |
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Useful substances are ......... by the ......... network that's wrapped around them. |
1. reabsorbed 2. capillary |
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How is is epithelium of the wall of the PCT specialised for reabsorption? |
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What substances are reabsorbed at the PCT? Name the two mechanisms they are reabsorbed by.
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How and why does water enter the blood from the filtrate? |
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What parts of the nephron is water reabsorbed at? |
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What happens to the filtrate that remains after selective reabsorbtion? |
It passes along the ureter to the bladder. |
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What is urine made up of? |
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What does urine not usually contain? |
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Label this image of the renal cortex. |
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Label this image of a renal medulla |
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