ch 19 flash

  1. hypovolemic shock
    insufficient cardiac output resulting from a drop in blood volume
  2. autorhythmic
    pertaining to cells that spontaneously produce action potentials at regular time intervals, chiefl cardiac and smooth muscle cells.
  3. pulmonary
    pertaining to the lungs
  4. interatrial septum
    the wall between the atrial of the heart
  5. hypernatremia
    an excess of sodium ions in the blood
  6. atrioventricular valves
    the bicuspid/mitral (right) and the tricuspid (left) valves between the atria and the ventricules of the heart.
  7. cardiac cycle
    one complete cycle of cardiac sytosol and diastole.
  8. low-density lipoprotein
    a blood-born droplet of about 20% protein and 80% lipid that transports cholesterol from the liver to other tissues.
  9. edema
    abnormal accumulation of tissue fluid resulting in swelling of the tissue
  10. arrhythmia
    an irregularity in the cardiac rhythm.
  11. cusp
    one of the flaps of a valve of the heart, veins, and lymphatic vessels.
  12. afterload
    the force exerted by arterial blood pressure that opposes the openings of the aortic and pulmonary valves of the heart.
  13. ectopic
    in an abnormal location; for example, ectopic pregnancy and ectopic pacemakers of the heart
  14. diastole
    a peroid in which a heart chamber relaxes and fills with blood; especially ventricular relaxation.
  15. myocyte
    a muscle cell, especially a cell of cardiac or smooth muscle.
  16. atherosclerosis
    a degenerative disease of the blood vessels characterized by the pressence of atheromas and often leading to calcification of the vessel wall.
  17. risk factor
    any environmental factor or characteristic of the individual that increases a person's chance of developing a particular disease; including such intrinsic factors as age, sex, and race and such extrinsic factors as diet, smoking, and occupation.
  18. sinus
    an air-filled space in the cranium
  19. stroke volume
    the volume of blood ejected by one ventricle of the heart in one contraction
  20. systemic circuit
    all blood vessels that convey blood from the left ventricle to all organs of the body and back to the right atrium of the heart; all of the cardiovascular system except the heart and pulmonary circuit.
  21. systole
    the contraction of any heart chamber; ventricular contraction ounless otherwise specified.
  22. coronary circulation
    a system of blood vessels that serve the wall of the heart
  23. atheroma
    a fatty deposit (plaque) in a blood vessel, consisting of lipid, smooth muscle, and microphages; characteristic of atherosclerosis
  24. atrioventricular node
    a group of autorhythmic cells in the interatrial septum of the heart that relays excitation from the atria to the ventricles.
  25. cardiac output
    the amount of blood pumped by each ventricle of the heart in 1 minute
  26. cardiovascular system
    an organ system consisting of the heart and blood vessels, serving for the transport of blood. compare circulatory system
  27. high-density lipoprotein
    a lipoprotein of the blood plasma that is about 50% lipid and 50% protein functions to transport phospholipids and cholesterol from other organs to the liver for disposal. a high proportion of HDLs to LDL is desirable for cardiovascular health
  28. cardiac reserve
    the difference between maximum and resting cardiac output, which determines a person's tolerance for exercise
  29. baroreceptors
    pressure sensors located in the heart, aortic arch, and carotid sinuses that trigger autonomic reflexes in response to fluctuations in blood pressure.
  30. hypovolemic shock
    insufficient cardiac output resulting from a drop in blood volume
  31. myocardium
    the middle, muscular layer of the heart
  32. pulmonary circuit
    a route of blood flow that supplies blood to the pulmonary alveoli for gas exchange and then returns it to the heart; all blood vessels from the right ventricle to the left atrium
Card Set
ch 19 flash
ch 19 flash