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Thoracic duct opens into...

Thoracic duct opens into

A

right subclavian artery

B

left subclavian artery

C

right subclavian artery

D

left subclavian vein

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Thoracic Duct**: The thoracic duct is the largest lymphatic vessel in the human body. It plays a crucial role in the lymphatic system by transporting lymph, which is a fluid that contains excess fluids, proteins, and waste products from tissues back into the bloodstream. 2. **Function of the Thoracic Duct**: The thoracic duct is responsible for transporting approximately 75% of the lymph from the entire body. It helps maintain fluid balance by returning excess interstitial fluid to the circulatory system. 3. **Location of the Thoracic Duct**: The thoracic duct primarily drains lymph from the left side of the body, including the left arm, left side of the head and neck, and the entire lower body. 4. **Opening of the Thoracic Duct**: The thoracic duct opens into the left subclavian vein. This is where the lymph collected by the thoracic duct is returned to the bloodstream. 5. **Comparison with Right Lymphatic Duct**: It is important to note that the right side of the body has a different lymphatic vessel known as the right lymphatic duct, which drains lymph from the right side of the head, neck, and right arm into the right subclavian vein. 6. **Conclusion**: Therefore, the thoracic duct opens into the left subclavian vein, making this the correct answer to the question. **Final Answer**: The thoracic duct opens into the left subclavian vein. ---
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