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Questions and Answers
What stimulates erythropoiesis in the body?
What stimulates erythropoiesis in the body?
- Production of erythropoietin by the kidneys (correct)
- Secretion of renin in response to decreased arteriolar pressure
- Proximal convoluted tubules contacting luminal fluid
- Reabsorption of water and solutes in the nephron
What is the main function of the glomeruli in the kidney?
What is the main function of the glomeruli in the kidney?
- Production of erythropoietin
- Secretion of renin
- Filtering blood to form filtrate (correct)
- Reabsorption of water and solutes
Where does the production of 1,25-dihydroxyvitamin D occur in the kidney?
Where does the production of 1,25-dihydroxyvitamin D occur in the kidney?
- In the loops of Henle
- Following hepatic hydroxylation of 25-hydroxyvitamin by the renal enzyme 1-hydroxylase (correct)
- In the proximal convoluted tubules
- In the distal convoluted tubules
What is the primary role of loops of Henle in the kidney?
What is the primary role of loops of Henle in the kidney?
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Where are the distal convoluted tubules located in the kidney?
Where are the distal convoluted tubules located in the kidney?
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Study Notes
Erythropoiesis Regulation
- Hypoxia, or low oxygen levels, stimulates erythropoiesis in the body.
Kidney Functions
- The main function of the glomeruli in the kidney is to filter waste and excess substances from the blood.
Vitamin D Production
- The production of 1,25-dihydroxyvitamin D occurs in the proximal tubules of the kidney.
Loop of Henle Functions
- The primary role of loops of Henle in the kidney is to concentrate or dilute urine by reabsorbing or secreting ions and water.
Distal Convoluted Tubules
- The distal convoluted tubules are located in the cortex of the kidney, where they play a crucial role in regulating electrolyte balance and blood pressure.
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Description
Test your knowledge of the functions of the renal system, including excretion of waste products, regulation of solutes and water, acid-base balance, and endocrine functions such as vitamin D metabolism.
