EMTB-11 Ch4d Cardio & Blood

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EMTB-11 Ch4d Cardio & Blood
2010-11-23 14:13:07
Chapter4 Cardiovascular Blood Composition

Cardiovascular & Blood Composition
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  1. Cardiovascular System
    the system made up of the heart (cardio) and the blood vessels (vascular); the circulatory system.
  2. atria
    the two upper chambers of the heart. There is a right atrium (which receives the unoxygenated blood returning from the body) and a left atrium (which receives oxygenated blood returning from the lungs).
  3. ventricles
    the two lower chambers of the heart. There is a right ventricle (which sends oxygen-poor blood to the lungs) and a left ventricle (which sends oxygen-rich blood to the body).
  4. venae cavae
    the superior vena cava and the inferior vena cava. These two major veins return blood from the body to the right atrium.
  5. valve
    structure that opens and closes to permit the flow of a fluid in only one direction.
  6. cardiac conduction system
    a system of specialized muscle tissues which conduct electrical impulses that stimulate the heart to beat.
  7. artery
    any blood vessel carrying blood away from the heart.
  8. coronary arteries
    blood vessels that supply the muscle of the heart (myocardium).
  9. pulmonary arteries
    the vessels that carry blood from the right ventricle of the heart to the lungs.
  10. carotid arteries
    the large neck arteries, one on each side of the neck, that carry blood from the heart to the head.
  11. femoral artery
    the major artery supplying the leg.
  12. brachial artery
    artery of the upper arm; the site of the pulse checked during infant CPR.
  13. radial artery
    artery of the lower arm. It is felt when taking the pulse at the wrist.
  14. posterior tibial artery
    artery supplying the foot, behind the medial ankle.
  15. dorsalis pedis artery
    artery supplying the foot, lateral to the large tendon of the big toe.
  16. arteriole
    the smallest kind of artery.
  17. capillary
    a thin-walled, microscopic blood vessel where the oxygen/ carbon dioxide and nutrient/ waste exchange with the body's cells takes place.
  18. venule
    any blood vessel returning to the heart.
  19. pulmonary veins
    vessels that carry oxygenated blood from the lungs to the left atrium of the heart.
  20. plasma
    fluid portion of the blood.
  21. red blood cells
    carry oxygen to and carbon dioxide away from the cells.
  22. white blood cells
    produce substances that help the body fight infection.
  23. pulse
    rhythmic beats caused as waves of the blood move through and expand the arteries.
  24. platelets
    components of the blood; membrane-enclosed fragments of specialized cells.
  25. periperal pulses
    the radial, brachial, posterior, tibial, and dorsalis pedis pulses, which can be felt at peripheral (outlying) points of the body.
  26. central pulses
    the carotid and femoral pulses, which can be felt in the central part of the body.
  27. blood pressure
    the pressure caused by the blood exerting force against the walls of blood vessels. Usually arterial blood pressure is measured.
  28. systolic blood pressure
    pressure created in the arteries when the left ventricle contracts and forces blood out into circulation.
  29. diastolic blood pressure
    pressure in the arteris when the left ventricle is refilling.
  30. perfusion
    supply of oxygen to and removal of wastes from the cells and tissues of the body as a result of the flow of blood through the capillaries.
  31. hypoperfusion
    inadequate perfusion of the cells and tissues of the body caused by insufficient flow of blood through the capillaries. aka shock