chapter 3

  1. A system of the body composed of the cardiovascular and respiratory systems.
    Cardiorespiratory system
  2. A system of the body composed of the heard, blood and blood vessels.
    Cardiovascular system
  3. A hollow muscular organ that pumps a circulation of blood through the body by means of rythmic contraction.
  4. The space in the chest between the lungs that contains all the internal organsof the chest except the lungs.
  5. A specialized are of cardiac tissue, located in the right atrium of the heart, which initiates the electrical impulses that determine the heart rate; often termed the pacemaker for the heart.
    Sinoatrial (SA) node
  6. A small mass of specialized cardiac muscle fibers, located in the wall of the right atrium of the heart, that receives heartbeat impulses from the sinoatrial node and directs them to the walls of the ventricals
    Atrioventricular (AV) node
  7. The superior chamber of the heart that receives blood from the veins and forces it into the ventricles.
  8. The inferior chamber of the heart that receives blood from its corresponding atrium and, in turn, forces blood into the arteries.
  9. The amount of blood pumped out of the heart with each contraction.
    stroke volume
  10. The rate at which the heart pumps
    heart rate (hr)
  11. Heart rate x stroke volume, the overall performance of the heart.
    cardiac output
  12. fluid that circulates in the heart, arteries, capillaries and veins, carries nutrients and oxygen to all parts of the body, and also rids the body of waste products.
  13. Network of hollow tubes that circulates blood throughout the body
    blood vessels
  14. Vessels that transport blood away from the heart.
  15. The smallest blood vessels, and the site of exchange of chemicals and water between the blood and tissues.
  16. vessels that transport blood from the capillaries toward the heart
  17. small terminal branches of an artery which end in capillaries
  18. the very small veins that connect capillaries to the larger veins
  19. A system of organs (the lungs and respiratory passageways) that collects oxygen from the external environment and transports it to the bloodstream
    respiratory system
  20. Is composed of skeletal structures (bones) and soft tissues (muscles) that work together to allow proper respiratory mechanics to occur and help pump blood back to the heart during inspiration.
    respiratory pump
  21. The process of actively contracting the inspiratory muscles to move air into the body.
  22. the process of actively or passively or actively relaxing the inspiratory muscles to move air out of the body.
  23. The process of getting oxygen from the environment to the tissues of the body.
  24. The highest rate of oxygen transport and utilization achieved at maximal physical exertion.
    maximal oxygen consumption (vo2max)
Card Set
chapter 3
The cardiorespiratory system