The figure shows the human urinary system with structures labelled A to D. Select the correct option.
Correct answer: C. Ureter (transports urine from kidney to urinary bladder)
- A. Abdominal aorta (the large artery supplying blood to the body)
- B. Renal vein (carries oxygenated blood away from the kidney)
- C. Ureter (transports urine from kidney to urinary bladder)
- D. Inferior vena cava (large vein returning blood to the heart)
Explanation
A is the adrenal gland secreting adrenaline and noradrenaline for quick energy. B is the renal pelvis leading to ureters, C is the medulla with loops of Henle, and D is the cortex with convoluted tubules and Malpighian corpuscles.
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About Homeostasis
Homeostasis maintains a stable internal environment through the kidney and urinary system, thermoregulation and excretion. The kidney topics include filtration, selective reabsorption, urine formation and water balance, while thermoregulation involves sweating, vasodilation, vasoconstriction and hormonal control; excretion is different from egestion, which removes undigested food.
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