👉 The term "periarterial" refers to a region within the body that is composed of two layers, one being called the pericardium and the other being called the intercostal筋膜。 The pericardium is the outer layer of the heart, while the intercostal筋膜是内部的肌肉组织，它们之间连接在一起形成一个完整的结构。
