Blood and its functions

In this topic

• The internal environment of the body
• Blood — a liquid connective tissue
• The functions of blood
• Blood loss, donation and the blood test

Key terms

• Internal environment
• Blood
• Tissue fluid
• Lymph
• Lymph nodes
• Homeostasis
• Plasma
• Formed elements
• Erythrocyte
• Leukocyte
• Thrombocyte
• Red bone marrow

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