Urine Transport Structure: Kidneys to Bladder
Urine is transported from the kidneys to the urinary bladder through the ureters. These are muscular tubes that use peristalsis (wave-like contractions) to actively move urine downwards, preventing backflow.
Analysis of Options
- Ureters: Correct. These tubes connect the renal pelvis (part of the kidney) directly to the urinary bladder.
- Vena cava: Incorrect. The vena cava is a major blood vessel involved in returning deoxygenated blood to the heart, not urine transport.
- Vein: Incorrect. Veins are blood vessels carrying blood towards the heart.
- Artery: Incorrect. Arteries are blood vessels carrying blood away from the heart.
Therefore, the correct structure facilitating urine transport from kidneys to the bladder is the ureter.
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