Biology 5090 · O Level · Blood vessels

Blood vessels — practice question

The diagram illustrates a cross-section of part of a vein. Which organs would be encountered first in directions 1 and 2?

  • A1: heart; 2: brain
  • B1: intestine; 2: liver
  • C1: kidney; 2: heart
  • D1: lung; 2: heart

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