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Anatomy
| Question | Answer |
|---|---|
| Where does filtration occur in the kidney? | In the glomerulus |
| What is the functional unit of the kidney? | The nephron |
| What is the primary force that drives filtration? | Blood pressure |
| What happens during tubular reabsorption? | Useful substances like water, glucose, and ions return to the blood. |
| What happens during tubular secretion? | The kidney removes wastes like H⁺, drugs, and toxins from the blood into the filtrate. |
| What hormone increases water reabsorption? | ADH |
| What hormone increases sodium reabsorption? | Aldosterone |
| What hormone promotes sodium and water loss? | ANP (Atrial Natriuretic Peptide) |
| What activates the renin-angiotensin-aldosterone system (RAAS)? Answer: | Low blood pressure or low blood volume |
| What does angiotensin II do? | Vasoconstriction + stimulates aldosterone + increases blood pressure |
| What organ regulates CO₂ levels? | The lungs |