家兔四肢动脉解剖

家兔四肢动脉的分布情况,国内外文献均十分简单,特别是缺少一张完整的图。前、后足部的血管图,大部分文献中均略去。本文对此进行了研究,绘出了完整的模式图,可供参考。     

北京鸭小脑的解剖

本文用肉眼观察10例北京鸭小脑。6例小脑连续切片,Nissl染色,光镜下观察小脑核。25例在北京鸭小脑皮层及小脑内、外侧核内注HRP,10例在脊髓注入HRP,追踪脑干和小脑的标记细胞。明确小脑皮层及核的脑干传入神经元及小脑向脊髓投射的神经元。北京鸭小脑较小,占全脑长的40％。仅蚓部发达,没有小脑半球,而有一对小脑耳。小脑的分叶与鸡的相似。首裂前有舌,中央小叶,山顶三个部分;首裂与锥前裂间有山坡、蚓小叶与蚓结节;锥前裂后方有蚓锥,蚓垂和小结。蚓锥与蚓垂不十分后凸。用HRP追踪实验,在小脑皮层、蚓结节及蚓锥部注HRP,在桥核,F橄榄,螺旋内侧核,内侧网状核,中缝核等出现标记细胞。小脑耳部注HRP则在左右前庭核,被盖背侧核,F橄榄及内侧纵束核出现标记细胞。用HRP注入小脑内侧核在前庭各核,桥核,双侧螺旋内侧核,外侧网状核及F橄榄,Ⅵ、Ⅶ、Ⅷ内侧1/3蒲金野氏细胞出现标记。在外侧核注HRP则在前庭各核,双侧螺旋内侧核,桥核,双侧蓝斑,F橄榄及三叉神经脊束核,Ⅳ,Ⅴ,Ⅵ,Ⅶ叶小脑外侧部皮层出现标记。在颈中段脊髓注入HRP,在小脑皮层蒲金野氏细胞及小脑内侧核出现标记。本文讨论了视觉与小脑联系的结构,明确桥核在禽类是视顶盖传向小脑的中继站。小脑耳不仅有前庭的传入,还有视觉的通路。明确北京鸭小脑的皮层     

放牧绵羊的生物学效率

采用消化代谢试验方法，研究了放牧绵羊生物学过程的功能，试验结果表明，牧草的营养何价值随着粗纤维含量的增加而降低，其中每公斤牧草干物质中的可消化蛋白７、８、９、１０月分别为１０８．７４、７１．７１、５３．１７和３３．４４ｇ牧草蛋白的生物学效率相应是１６．６７％，１４．２９％，１４．４５％和５．７７％，依据系统功能，研究了提出了通过放牧管理－转移牧草或家畜，调节土壤，牧草和绵羊三者的关系，使其供求平衡     

RADIOGRAPHIC ANATOMY OF THE DROMEDARY SKULL

Radiographs were made of the skull of a 1.5-year-old and a 3-year-old camel for the purpose of assessing and describing the radiographic anatomy. Radiographic anatomy was compared with results from gross dissection of 5 additional camel specimens. Camel skull anatomy was related to that of the horse and ox. Obvious differences were found. These include in the camel, large occipital condules, a notched foramen magnum, an intracranial projection for the interparietal bone, and small paranasal sinuses. Other minor differences are detailed in the text.     

CROSS-SECTIONAL ANATOMY OF THE BEAGLE THORAX

Transverse sections of the thorax of the Beagle were prepared, photographed, and compared with computerized tomographic scans and dissection specimens. Anatomical features were identified by these means with the aid of anatomical texts. A series of labeled photographs was produced to aid in the interpretation of computerized tomography and nuclear magnetic resonance scans.     

ANATOMY OF THE CANINE ORBITAL REGION

Computed tomography (CT) was used to study the normal anatomy of the orbital region in one Beagle. Direct transverse and reformatted dorsal, sagittal, and oblique plane images were used to distinguish various soft tissue structures. Intraorbital fat provided a natural contrast against which extraocular muscles and nerves could be discerned. The noninvasive nature and the multiplanar imaging capabilities of CT provided a means by which the orbital contents could be precisely localized and differentiated from one another.     

ULTRASONOGRAPHIC ANATOMY OF THE CANINE ELBOW

To produce detailed ultrasonographic images of the soft tissue structures around the canine elbow joint, a series of greyhound cadaver limbs were scanned both intact and dissected in a water bath. Suitable transducer positions and bone landmarks are described and the ultrasonographic appearance of the lateral collateral ligament, anconeal process, triceps tendon, origin of olecranon ligament, biceps tendon insertion, medial collateral ligament, and medial coronoid process are illustrated. Improved understanding of the anatomy of the canine elbow will support clinical ultrasonography of this region.