Across
- 2. these fibers depolarize the right and left ventricles
- 4. this segment of the EKG represents an AV nodal delay
- 5. the P-wave represents the depolarization of the ______
- 9. a thin outer layer of epithelial cells in the heart
- 11. these types of cells are modified cardiac muscle fibers that have lost their contractile machinery; make up nodes
- 13. this segment of the EKG represents the ventricles contracting and emptying
- 14. cardiac ________ fibers do the mechanical work of generating blood pressure
- 15. decreasing end diastolic volume will ________ cardiac output
- 16. the T-wave represents ventricular _________.
- 17. if an unstable fibrous plaque breaks free from the coronary wall it can become a ________
- 20. cardiac muscle cells are joined end to end by __________
- 23. used to auscultate heart sounds
- 24. a condition in which an artery wall thickens as a result of the accumulation of fatty materials such as cholesterol and triglycerides.
- 25. this ion is responsible for the plateau phase of the cardiac action potential
- 26. originates at AV node and travels in region of heart near 4 corners of the chambers and into IV septum
- 27. this pathology is often depicted on an EKG that shows no association between the P wave and QRS complex
- 30. this type of heart beat arises when one location, other than the SA node, becomes abnormally excitable and initiates heartbeats before the SA node
- 31. thick middle layer of striated cardiac muscle cells, coronary blood vessels, and ANS fibers
- 32. these are the "spot weld" of adjacent plasma membranes, allowing for mechanical coupling
Down
- 1. number of valves closed during isovolumetric ventricular contraction
- 2. a decrease in permeability of this ion is responsible for the slow depolarization phase of autorhythmic cells
- 3. an increase in sympathetic stimulation would shift the frank-starling curve in this direction
- 6. a typical cardiac muscle action potential lasts ________ while a neuronal action potential lasts approximately 1-3msec.
- 7. an embolus in a coronary artery has the potential to cause this sudden and acute pathology.
- 8. an increase in heart rate can be achieved by the removal of this input
- 10. vessel ________ can result in fatty streak formation
- 12. these allow ions to be exchanged quickly between neighboring cells
- 18. During systole, the normal heart pumps all of the blood returned to it during diastole, describes what law of the heart?
- 19. heart wall layer that contains a thin layer of endothelial cells in direct contact with blood in heart chamber
- 21. first part of the cardiac conduction system, normally sets the heart rate
- 22. the QRS complex represents the depolarization of the ________
- 26. the term for an abnormally slow heart rate
- 27. stroke volume is equal to cardiac output divided by __________
- 28. this pressure is higher than left ventricular pressure during diastole
- 29. during the rapid downstroke phase of the pacemaker action potential, there is a rapid ________ in potassium permeability.
- 33. EDV-ESV=?