摘要
观察测量了47头成年牦牛心脏的形态结构,并就其与其它家畜之间的差异进行了比较。结果如下:①卵圆孔的闭锁率的百分之百;②左心室心内膜光滑、平整,肉柱较右心室内的少;③在主动脉纤维环的左侧(所有标本)和右侧(5例)均见有心骨;④主动脉半月瓣结粗大,呈半球型小结节状,出现率为95%;肺动脉半月瓣结较小,呈短柱状,出现率为87%;⑤本文还就心室壁的厚度、各瓣膜口的周径,心脏外部各径及卵圆膜的厚度等进行了测量。
The form and the eonstraction of the hearts were observated and measurd in 47 adult yaks, and some differences from other animals were discribed. The results are as follows: (1) The insufficiency of the oval foramen was not found in all investigeted hearts. (2)The endocardium of the left ventricular walls are smooth, and the trabeclae carneae in left ventricule are not more than those in right ventricule. (3)The os cardis was found in the right side (in all specimens)and left side(only 5 specimens)of the aortic fibrous ring. (4)The nodulus valvulae semilunaris is strong semiball nodule on the aortic valve, and it is small cylindric nodule on the pulmonary valve. Its frequence is 95% on the aortic valve and 87% on the pulmonary valve. (5) The thickness of the ventri—cular walls, the internal circumference of the atrioventricular orifices and arteral orifices, some anatomical item of the surface of the heart and the thickness of the oval membrane ect were ditermined in the paper.
关键词
牦牛
卵圆孔
心脏
形态学
Yak, oval foramen, Os cardis, Nodulus Valvelae semilunaris, Trabeclae, Anatomy
