Lesson 11.2 Crossword
Across
1. | the left limbs or branches through which electrical impulses are transmitted from the bundle of His through the left ventricle |
6. | a slender bundle of modified cardiac muscle that conducts electrical impulses from the AV node to the left and right bundle branches to Purkinje fibers in the ventricle |
8. | a normal heart rhythm but with a rate below 60 bpm; a condition common among athletes |
9. | a small mass of specialized tissue located in the right atrium that normally acts as the pacemaker of the heart, causing it to beat at a rate between 60 and 100 bpm |
10. | condition in which the atria contract in an uncoordinated, rapid manner (rate above 350 bpm), causing the ventricles to contract irregularly |
11. | to relax; the atria and ventricles repolarize as the heart beats |
12. | part of the impulse-conducting network of the heart that rapidly transmits impulses throughout the ventricles, causing ventricular contraction |
Down
2. | a normal heart rhythm but with a rate above 100 bpm |
3. | pressure-sensitive nerve endings in the atrium, aortic arch, and carotid arteries |
4. | a condition in which the impulses traveling from the SA node to the ventricles are delayed, intermittently blocked, or completely blocked by the AV node |
5. | to contract; the atria and ventricles depolarize as the heart beats |
7. | an irregular heartbeat or rhythm |