| 功能 |
The central pump of the cardiovascular system, propelling blood through the pulmonary and systemic circuits. Beats approximately 100,000 times per day, pumping about 7,500 liters of blood daily. |
The only movable bone of the skull, forming the lower jaw. Essential for mastication (chewing), speech articulation, and maintaining the lower dental arch. |
| 临床意义 |
Coronary artery disease is the leading cause of death worldwide. Myocardial infarction results from coronary artery occlusion. Heart failure, valvular diseases, arrhythmias, and congenital heart defects are major cardiovascular conditions. |
Mandibular fractures are the second most common facial fractures. The inferior alveolar nerve runs through the mandibular canal and can be damaged during wisdom tooth extraction. Temporomandibular joint disorders cause … |