Anatomy & Physiology › Section W · The urinary system › Topic W.2
Gross and microscopic anatomy of the kidney
Each kidney is about the size of a fist, yet it receives roughly a fifth of the blood the heart pumps. This topic works from the outside in: where the kidneys sit, how they are divided, how blood flows through them, and the microscopic nephron that does the work.
In this topic
- Position and coverings
- The hilum and internal regions
- Blood supply
- Worked example: a kidney's share of the blood
- Two capillary beds in series
- The nephron and its two types
- The filtration membrane
- The juxtaglomerular apparatus
- Tubule cells match their jobs
- Worked example: tracing blood and filtrate
- Common mistakes to avoid
- Key takeaways
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