circulatory system

• artery

  • carries blood away from heart
  • thick walls thin lumen to withstand high pressure
• vein

  • carried blood back to the heart
  • thin walls thick lumen prevents back flow
• capillary

  • one cell thick allows fast diffusion between blood and cells
• stent - can be insterted to open up the vessel

  fat can build up in arteries that restricts blood flow (cvd)
• statins

  drugs that reduce fatty deposits
• CHD (coronary heart disease)

  artery supplying blood to the heart become blocked