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# The Blood The image contains notes on blood components and their functions. ## Blood Components **Plasma (55%)**: * Liquid part of blood * Allows substances to dissolve in it, for transport * Transports: * Oxygen * Nutrients (glucose + amino acids) * Hormones **Blood Components (4...

# The Blood The image contains notes on blood components and their functions. ## Blood Components **Plasma (55%)**: * Liquid part of blood * Allows substances to dissolve in it, for transport * Transports: * Oxygen * Nutrients (glucose + amino acids) * Hormones **Blood Components (45%)**: * **Red Blood Cells (45%)**: * Produced in bone marrow (breastbone) * Contain iron-hemoglobin (allows O₂ to attach to RBC) * Biconcave shape (hollow in the center): increases surface area allowing more oxygen to attach. * Flexible: Allows them to move in and out of capillaries * No Nucleus (prokaryotic) * Transports oxygen * **Platelets**: * Collects the blood * Protein fragments * Reduce chance of infection * **White Blood Cells**: * Produced in bone marrow * Fight infection * Produce antibodies * Attack/digest the pathogen * **Lymphocytes**: * Produce antibodies * Nucleus * **Monocyte/Phagocyte**: * Nucleus * Cytoplasm extends around the pathogens **Diagram**: The image also has diagrams that illustrates these components and their functions: * **Plasma** is shown as a clear liquid in a test tube. * **Red Blood Cells** are shown a reddish color in the test tube.. and are drawn to depict their biconcave shape. * **White Blood Cells/Lymphocytes** are drawn to show a nucleus, and are depicted in a rough structure with a complex shape, compared to red blood cells, which are drawn to depict their shape.