structure of the nephron
- Created by: Lottie Hodson
- Created on: 23-04-13 23:28
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- STRUCTURE OF THE NEPHRON
- GLOMBERULUS +BOWMANS CAPSULE
- Ultra filtration
- 1. Pressure builds up in the glomerulus
- 2. small molecules move from the blood into the nephron
- glomerular filtrates: water, salt, urea and glucose
- Passive process (no energy used)
- Ultra filtration
- PROXIMAL CONVOLUTED TUBE
- SELECTIVE REABSORPTION
- 1. Only glucose is reabsorbed
- Little glucose is used so we can reabsorb a lot of it for respiration
- 2. moves from the nephron to the blood
- Uses energy
- Active Transport
- 1. Only glucose is reabsorbed
- SELECTIVE REABSORPTION
- COLLECTING DUCT
- Osmosis
- When dehydrated
- 1. conserve water so it must be returned to the blood
- 2. Collecting duct becomes permeable
- When hydrated
- 1. No need to conserve water so it leaves in the urine
- 2. Collecting duct becomes impermeable
- When dehydrated
- Osmosis
- GLOMBERULUS +BOWMANS CAPSULE
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