Kawamura K, Urthaler F, James T N
Recent Adv Stud Cardiac Struct Metab. 1976;12:81-91.
In the little brown bat, Myotis lucifugus, topography and ultrastructure of the sinus node and the atrioventricular (AV) node resemble those in large mammalian hearts, except that the P cells in the sinus node are smaller than those in the bat AV node or those in the sinus node of slower hearts (e.g., dog, man). Despite rich innervation in the bat nodes, true neuromuscular synapses are rarely formed. Bat working cardiocytes have a well developed sarcoplasmic reticulum, but otherwise resemble working myocytes of larger mammals.
在小棕蝠（Myotis lucifugus）中，窦房结和房室（AV）结的拓扑结构和超微结构与大型哺乳动物心脏中的相似，只是窦房结中的P细胞比蝙蝠房室结中的或心率较慢的心脏（如狗、人类）窦房结中的P细胞小。尽管蝙蝠的这些节点有丰富的神经支配，但真正的神经肌肉突触很少形成。蝙蝠的工作心肌细胞有发达的肌浆网，但在其他方面与大型哺乳动物的工作心肌细胞相似。
