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8.2 Blood and circulation
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The Components of Blood

The Components of Blood

Blood is a vital transport tissue consisting of cells suspended in a straw-colored liquid medium called plasma. Plasma makes up over half of your blood volume and carries carbon dioxide, urea, digested food molecules, hormones, and heat energy around the body.

8.2 Blood and circulation Lesson

  1. GCSE
  2. /Biology
  3. /8.2 Blood and circulation

Step-by-step lessons covering Edexcel GCSE Biology 8.2 Blood and circulation for Foundation and Higher tier. Each lesson breaks down 8.2.1 Structure and function of the blood, 8.2.2 Structure of blood vessels, 8.2.3 Structure of the heart and circulatory system, and 8.2.4 Cardiac output, then works through exam-style questions in Paper 1 and Paper 2 format. Start with the foundational topics and build up to the higher-tier material.