![]() The second phase is the inguinoscrotal phase. The initial phase of descent is the transabdominal phase and is probably influenced by Mullerian inhibitory substance/Antimullerian Hormone. The tunica vaginalis is fused with theĬovering of the testis, the tunica albuginea. The lining of this cavity is a reflection of the peritoneum, and has The cavity of the tunica vaginalis is in direct communication with the peritonealĬavity. There are smooth muscle bundles dispersed in the dermal collagen.įigure 1: Normal scrotal skin of a bull - hairless region.įigure 2: Normal scrotal skin of a bull - hair follicles. Region - the dermal collagen finishes at the vaginal tunic (parietal Histologically, the skin is mostly hairless and there is no real subcutaneous The testes and epididymides are arranged with one The scrotum of the bull is located between the back legs, and is mostly Approximately one per high-power field in a smear of semen was considered normal.ĪL Zart, VCL Jurgielewicz and CE Fernandes (2014) Seminal Leucocytary Profile in Beef Bulls. Zart et al (2014) reported an average of 4.73 x 109 /ml. White blood cells are normally found in semen, but in very low numbers. Alcohol-based solutions for bovine testicular tissue fixation. (Cabrera et al 2017)Ĭabrera NC, Espinoza JR, Vargas-Jentzsch P, Sandoval P, Ramos LA, Aponte PM. Other fluids for fixation were tested and 70% ethanol and acetic acid and glycerol seemed promising. ![]() ![]() The mainstay of histological assessment is Bouin Solution, a mixture of formaldehyde, acetic acid and picric acid. This is particularly the case for the testis when examination is to detect subtle differences in spermatogenesis. It is very important to fix reproductive tissues to minimize artefacts. Functional Anatomy of the Normal Bull Table of Contents Anatomy of the Bull ![]()
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