dba

• Major function


  transport, nutrients, waste, hormones, clot cells
• Formed elements and liquid portion of blood


  Formed: RBC, WBC, Platlets

  Liquid: plasma, water, sugar, proteins
• Name the structures composing the cardiovascular system


  heart, blood vessels

  Blood vessels: Arteries-away from heart

  Veins- back to the heart

  Capillaries: site of diffusion
• Distinguish between the coverings of the heart and they layers that compose the wall of the heart


  Pericardium-protect against infection

  -fibrous: anchor, prevent from overfilling

  -visceral: 2 layers

  Epicardium- outermost layer of heart with arteries and tissue
• Identify and locate.the major parts of the heart and discuss the functions of each part


  4 chambers

  2 atria- "Receiving" collect blood

  2 ventricles- "pumping" pump blood out of heart
• 4 valves


  2 atrioventricular - tricuspid (R) and biscupid(L)

  2 semilunar- pulmonary (RV/pulmonary artery), aortic (L)
• pathway of blood


  body->vena cava-->right atrium-->tricuspid-->right ventricle-->pulm valve--> pulm artery-->lung--> pulmonary vein-->left atrium-->bicuspid-->left ventricle--> aortic valve--> aorta-->body
• structures and functions of major blood vessels


  arteries: bring blood away from heart

  cappilaries: site of diffusion

  veins: bring blood back to the heart
• describe how substances are exchanged between blood in the capillaries and the cells of the body

  diffusion

  larger molecules can pass through
• explain how blood pressure is produced and controlled


  force of blood against walls of arteries
• pulmonary circuit


  heart-->pulmonary arteries-->lungs--> pulmonary veins-->heart (R)
• systemic circuit


  heart--
• systemic circuit


  heart-->aorta-->body systems-->vena cava-->heart (L)