作者magicfx (有进步了吧?)
看板ZooStudy
标题[比解]盲鳗解剖观察重点
时间Mon Nov 1 01:06:30 2004
※ [本文转录自 B91205XXX 看板]
作者: magicfx (有进步了吧?) 看板: B91205XXX
标题: [比解]盲鳗解剖观察重点
时间: Mon Nov 1 01:05:53 2004
1.prominent notochord
2.no vertebrate column
3.no bone
4.only one semicircular duct
5.the shallow buccal funnel that lacks rasping denticles
6.A canal leads from the median nostril to the olfactory sac
and then continues to the pharyngeal cavity.
7.copious mucous coat
kidney:
1.Mesonephrons - Mesonephric duct
2.前肾消失
3.all nephrostomes have closed
4.no peritubular capillaries and no renal portal system
5.hanging into the coelom
6.helf the length of the coelom
Nerve:
1.only two preotic or anterior laterial-line nerves
Respiratory system:
1.naris
2.nasopharyngeal duct
3.velar chamber
4.velum
Note:
内鳃孔和咽直接相连
外鳃孔在离口很远的後面 向外开口
使身体前部深入寄生组织 而不影响呼吸
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