Circulatory System - Blood

Cards (13)

What 4 things does the blood consist of?
Red blood cells
White blood cells
Plasma
Platelets
What is the role of the red blood cells?
Carry Oxygen from the lungs to the cells in the body
What pigment is found in the red blood cells and responsible for transporting oxygen?
Haemoglobin
What shape do red blood cells have and why?
They are shaped as biconcave disks to increase their surface area for oxygen
Where does haemoglobin combine with oxygen to make oxyhaemoglobin?
In the Lungs
Where does oxyhaemoglobin split up back into haemoglobin and oxygen?
In body tissues
What is the role of plasma?
Carries nutrients, hormones, proteins, waste products and all the other types of blood cells
What waste product does plasma carry?
Carbon dioxide and Urea
What is the role of white blood cells?
Responsible for fighting infections and protecting the body from pathogens
What are the 2 different types of white blood cells?
Phagocytosis and lymphocytes
How does phagocytosis help protect the body?
They engulf pathogens
How do lymphocytes help protect the body?
They produce antibodies which bind to pathogens and also produce antitoxins to neutralise toxins produced by the pathogens
What are platelets and what is their role in the blood?
They are fragments of cells that help clot blood to stop bleeding and prevent pathogens from entering wounds