Blood Components
Biology: Cambridge International GCSE Supplement, topic 9.4.1
Blood
Blood is a tissue. Tissues are groups of similar cells that act together to perform a similar function. Blood is made up of a fluid called plasma which has nutrients, ions, hormones, carbon dioxide and different types of cells in it:
Red blood cells
- Red blood cells (called erythrocytes) are suspended in blood plasma.
White blood cells
- White blood cells are suspended in blood plasma.
- There are two types of white blood cells: phagocytes and lymphocytes.
Platelets
- Platelets are suspended in blood plasma.