Gross anatomy of the lacrimal gland (Gl. lacrimalis) and its arterial vascularization in the fetus of zavot-bred cattle

Bu çalışmada Kars ve yöresinde yetiştirilen Zavot ırkı sığır fötuslarında gözyaşı bezinin makro-anatomisi ve arteriyel beslenmesi detaylı olarak incelenmiştir. Bu amaçla 2-9 aylık 15 adet fötus kullanılmıştır. Elde edilen bulgular aynı ırka ait 10 adet erişkin materyalden elde edilen bulgularla ve literatür verileriyle karşılaştırılmıştır. Bulgularda cinsiyete bağlı önemli bir farklılık elde edilemediğinden bu parametre dikkate alınmamıştır. Damarların takibi için renklendirilmiş lateks, sağ ve sol a. carotis communis yolu ile enjekte edilmiş ve ilgili anatomik yapılar bütün kadavralarda gözlemlenmiştir. Gözlemlerde sol gözyaşı bezinin daha büyük olduğu saptanmış olup, iki taraftaki bezin de arka yan tarafında fazladan bir uzantıya sahip olduğu belirlenmiştir. Bu uzantının ise bağ doku aracılığıyla bezin gövde kısmına bağlandığı görülmüştür. Bezin beslenmesi ile ilgili olarak a. lacrimalis'in daima a. maxilaris'ten ayrılan a. ophthalmica externa'dan başlangıç aldığı ve bezin beslenmesinden sorumlu tek damar olduğu belirlenmiştir.

Zavot ırkı sığır fötuslarında gözyaşı bezinin makroanatomisi ve arteriyel vaskularizasyonu

This study grossly observed in detail the morphology and arterial vascularization of the lacrimal glands (Glandula lacrimalis) of the Zavot-bred cattle raised in Kars and its province, and compared the findings with the 10 mature individuals of the same breed and the literature documents. To do that, a number of 15 fetuses at the age of 2-9 months were used in the research. Sex was disregarded since there were no sex-related differences among the materials used. Methodically, colored-latex was injected through the right and left common carotid arteries, followed by dissection. By this study, morphologic nature and arterial vascularization of the gland were observed. The left Lacrimal gland (Gl. lacrimalis sinister) was slightly larger than the right one (Gl. lacrimalis dexter). The both glands possessed an appendage-like structure lying on the caudo-lateral aspect of the gland and ventral to the eyeball (Bulbus oculi). Its parenchyma was in relation directly with that of the body of the gland. The lacrimal artery (A. lacrimalis) always originated from the external ophthalmic subbranch (A. ophthalmica externd) of the maxillary artery (A. maxillaris) was the only vessel responsible for the nourishment of the gland.

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