| 1. | Cardiac muscle is the muscle out of which the heart is made .
心肌是构成心脏的肌肉。 |
| 2. | Sympathetic nerves have their ganglia just above the heart .
交感神经的神经节位于心脏的上方。 |
| 3. | Sympathetic fibers are distributed to all regions of the heart .
交感神经纤维分布于心脏的所有部分。 |
| 4. | Activation of the heart normally begins in the sinoatrial node .
在正常情况下，心脏的活动始于窦房结。 |
| 5. | The beating of heart induces alternating currents in the surrounding tissues .
心脏的搏动在其周围组织中感应出交流电流。 |
| 6. | The parasympathetic innervation of the heart originates in the medulla oblongata .
支配心脏的副交感神经发源于延髓的迷走神经核。 |
| 7. | Wrap the proper-size cuff around the right arm and hold the arm level with the heart .
用大小合适的袖套带包裹右上臂，使上臂与心脏的高度相同。 |
| 8. | Over the other surface of the heart lies another layer of connective tissue, the epicardium .
心脏的外表面是由另一层结缔组织，即心外膜所覆盖。 |
| 9. | Normally the heart movements can be felt as distinct systolic and diastolic thumps .
正常时，能够感觉到心脏的运动是性质截然不同的收缩和舒张的撞击。 |
| 10. | The major effects of propranolol on the heart are absent in animals in which norepinephrine stores have depleted .
在体内去甲肾上腺素储存已经耗尽的动物，心得安对心脏的主要作用则不出现。 |
