Human Circulatory system

• The hierarchy of the system.

  1. cells

  2. tissue

  3. organs

  4. organ systems

  5 .organism
• Ecamples of cells = stem cells, fat cells, muscle cells. skin cells
• Tissue= an large mass of simular cells that make up a part of an organism and a specific function
• The circulatory system transports nutrients and oxygen to the cells. Cells and organs create waste and the waste is CO2
• remove waste products

  -toxins from bad food

  -from air we breathe
• circulatroy systems also distributes heat around body.
• Arteries = heap of oxygen capillaries= away from heart
• veins =to the heart- lacks oxygen
• organ system=Organisation of different organs arranged together to perform complex functions for the body
• The liver=is a factory that takes away toxins and separates nutrients needed.
• organism =living thing
• Tissue = group or layer of cells that work together to perform a specific function