FLOW PROPERTIES OF EXPIRATION AND INSPIRATION IN A TRAINED BOTTLE-NOSED PORPOISE
FLOW PROPERTIES OF EXPIRATION AND INSPIRATION IN A TRAINED BOTTLE-NOSED PORPOISE
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DOI：
10.1086/physzool.54.1.30155804
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发表时间：
1981-01-01
期刊：
影响因子：
--
通讯作者：
CORNELL, LH
中科院分区：
文献类型：
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作者：
KOOYMAN, GL;CORNELL, LH
在一只体重285 kg、经过训练的瓶鼻鼠海豚上测定了呼气和吸气的流量特性。测得的最大潮气量为26.4 l。为了缩放的目的，这被假定为肺活量（VC）。测得的最大峰值呼气流速为6.1 VC·cm·s-1。最大峰值吸气流速为2.1 VC·cm·s-1。完全到期所需的时间为. apprx。0.3 S.对于几乎所有的VC，呼气和吸气的流速都保持在其最大值附近。通气动作的这些特性对于在气孔位于水面上方的短时间内实现肺部气体的充分周转非常重要，因为海豚在达到巡航速度时会穿过空气/水界面。
The flow characteristics of expiration and inspiration were determined in a trained, 285 kg bottle-nosed porpoise. The largest tidal volume measured was 26.4 l. For purposes of scaling this was assumed to be vital capacity (VC). The maximum peak expiratory flow rate measured was 6.1 VC.cntdot.s-1. The maximum peak inspiratory flow rate was 2.1 VC.cntdot.s-1. The time required for a complete expiration was .apprx. 0.3 s. The flow rates of both expiration and inspiration remain near their maximum for nearly all of the VC. These properties of the ventilation maneuver are important in achieving adequate turnover of lung gases during the short period that the blowhole is above water, as the porpoise passes through the air/water interface when it is up to cruising speed.