3020 Lecture 19
Amber Stokes・2 minutes read
The human kidneys are essential organs for filtration, reabsorption, secretion, and excretion, with a detailed structure including nephrons and renal artery/vein function. The loop of Henle in the nephron is crucial for creating concentrated urine in birds and mammals through countercurrent exchange and reabsorption processes.
Insights
- Human kidneys are crucial organs located in the mid-back region, responsible for filtering blood, reabsorbing essential substances, and secreting waste products to produce urine, which is then stored in the bladder and excreted through the urethra.
- The nephrons within the kidney, each containing a glomerulus, Bowman's capsule, proximal and distal tubules, and a collecting duct, play a pivotal role in regulating osmolarity, with the loop of Henle creating a gradient for water and ion reabsorption, resulting in the production of hypertonic urine in birds and mammals.
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Recent questions
Where are human kidneys located?
Mid-back region
What is the function of the renal pelvis?
Collects urine from the kidney
How many nephrons are in each kidney?
About 1 million
What is the primary function of the collecting duct?
Controls water reabsorption
How does the loop of Henle contribute to urine concentration?
Creates osmolarity gradient
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