白枕鹤的呼吸系统及其生态适应

The Respiratory System of white-Naped Crane and Its Ecological Adaptation

摘要: 白枕鹤的呼吸系统由喉头、气管、鸣管、肺及气囊组成。喉头有淋巴小结分布。气管在龙骨突起内盘旋，并随年龄而增长，软骨环逐渐骨化。鸣管由左右两个支气管特化而成，呈膜状扁管入肺。肺的长度约占躯干的1/2。气囊几遍布全身，高度发达。整个呼吸系统的结构，与其高空飞翔生活相适应。

Abstract: 5 dead White-naped Cranes were collected from Anhui Province during winter.4 of them were anatomized to observe the macro and micro structures,another one was made into a casting mould specimen for the observation of the form and distribution of air sacs.