Asked in Premeth Test 30 — Circulation

The flow of lymph is always towards?

Correct answer: C. Thoracic duct

  • A. Pancreatic duct
  • B. Bile duct
  • C. Thoracic duct
  • D. Parotid duct

Explanation

The flow of lymph is always towards the thoracic duct. The thoracic duct is the largest lymphatic vessel in the body, and it is responsible for draining lymph from the lower body, the left side of the chest, and the left arm and neck. The thoracic duct empties into the left subclavian vein, which is located near the heart, and this is where lymph is returned to the bloodstream. Therefore, the flow of lymph is always towards the thoracic duct, which ultimately drains into the circulatory system near the heart.

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About Circulation

The circulatory system covers the chambers, valves and conducting pathway of the human heart, along with the cardiac cycle and control of heartbeat. It compares arteries, veins and capillaries by structure and function, and explains how the lymphatic system returns tissue fluid, transports absorbed fats and supports immunity.

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