Blood & Circulatory System

• What is the function of the circulatory system?

  The function of the circulatory system is to transport nutrients, oxygen, and hormones to cells throughout the body and remove waste products like carbon dioxide.
• What is included in the circulatory system?

  Heart, blood vessels, blood
• What is blood made up of?

  Red blood cells, white blood cells, platelets, and plasma.
• What is the function of blood?

  Transportation
• What is the function of red blood cells?

  Transports oxygen around the body
• What does the biconcave shape do?

  Increases surface area for gas exchange
• What does the haemoglobin do?

  Contains iron which carries oxygen
• What does oxygen combine with to become oxyhemoglobin?

  Haemoglobin
• What do phagocytes do?

  Phagocytes engulf and destroy pathogens or foreign particles in the body.
• What do lymphocytes do?

  Fight infections
• What are platelets and what is their function?

  Platelets are small cell fragments in the blood. Their function is to help with blood clotting to stop bleeding.
• What is plasma and what is its function?

  Straw coloured liquid that carries almost everything