Unit 3

• Main functions of blood

  • Transport nutrients (incl. Water)
  • Transport wastes (incl. CO2)
  • Regulate body heat
• Blood Transportation

  • Arteries: Pulse, thick muscle maintains mvmt.
  • Veins: Skeletal muscle pressure, valves
  • Capillaries: Diffusion b/w blood + cells
• Factors that influence blood pressure

  • Blood Volume
  • Blood Viscosity
  • Emotions (eg. fear, excitement)
  • Chemicals (eg. nicotine, caffeine)