Media tunica in muscular bridge, Marshall vein and coronary sinus in goat were composed with cardiac myocyte which had characteristic of Purkinje cell and had a little infantility.

• 山羊肌桥和Marshall静脉、冠状静脉窦中膜由心肌细胞组成，这些细胞具备Purkinje细胞的特点，具有一定的幼稚性。