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MDCAT
Biology
2017

Biology · Transport

Work through this past-paper style MCQ, then read the full explanation. Practice more biology questions on mMCQ with adaptive practice and topic analytics.

Question

The thoracic lymph duct of the lymphatic system opens into ____________.

Options
  • A

    Superior vena cava

  • B

    Subclavian Vein

  • C

    Inferior vena cava

  • D

    Renal vein

Explanation

Lymph capillaries join to form larger and larger lymph vessels; and ultimately form the thoracic lymph duct, which opens into the subclavian vein. The low of lymph is always towards the thoracic duct.

The superior vena cava collects blood from the upper body and dumps into the heart.

Lymph capillaries join to form larger and larger lymph vessels; and ultimately form the thoracic lymph duct, which opens into the subclavian vein. The low of lymph is always towards the thoracic duct.

The inferior vena cava collects blood from the lower part and brings it to the heart.

Renal veins collect deoxygenated blood from the kidneys.

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Tagged under Biology · Transport · 2017