Alan Peres Ferraz de Melo

Análise histológica das glândulas uretrais da capivara (Hydrochoerus hydrochaeris)

To perform a microscopic study of the glands attached to the male urethra, we used two adult capybaras (Hydrochoerus hydrocaeris) from which fragments of the urethral glands were collected, immersed in Bouins fixative solution, washed thoroughly with 70% to absolute alcohol, submitted to routine histological techniques and stained with hematoxylin/eosin and Massons trichromic method. The morphological findings were: Vas deferens has a thickening of the wall without granular epithelium and with unchanged lumen; the vesicular gland has a secretory epithelium of pseudostratified columnar type; the prostate gland has a high and ramified mucous membrane covered with pseudostratified cylindrical epithelium. Male capybaras have vesicular, prostate as urethral glands. In the material examined, no secretory epithelium corresponding to bulbourethral glands was identified; morphologically it resembles to the other histricomorphs.

Vascularização arterial do trato gastrointestinal da Trachemys scripta elegans, Wied, 1838

Estudamos a irrigacao do esofago, ventriculo gastrico, pâncreas e intestinos de 30 tartarugas da especie Trachemys scripta elegans injetados com substância latex, onde evidenciamos duas aorta, sendo aorta direita e esquerda, que em 100,00% dos casos apresenta um trato anastomotico entre elas, ao nivel da emergencia da arteria celiaca. A arteria mesenterica cranial e responsavel pela irrigacao do jejuno, ileo, ceco, colo ascendente, colo transverso em 100,00% dos casos. Ja a arteria mesenterica caudal origina-se da arteria iliaca interna no antimero direito, em 26 preparacoes (86,60%), e no antimero esquerdo em 03 casos (13,30%). Em 01 preparacao (3,30%) a arteria mesenterica caudal, no antimero direito, origina-se a partir das arterias iliacas direita e esquerda.

Segmentação anátomo-cirúrgica em baços de queixada (Tayassu pecari - Link, 1975)

In this research the arterial and venous segmentation of thirty male and female pecares spleen were studied. These spleen were collected from Pro-fauna Assessoria e Comercio Ltda. The arterial and venous systems were filled esther with painting vynil acetate or with painting latex Neoprene 650. The spleen was divided, according to lineal gastroepiploic vessel, from the left in the three parts: dorsal, middle and ventral. Arterial, venous and arteriovenous segments were identified in these percentuals: in the dorsal party were found 69.5% arteriovenous segment (SAV), 23.9% of arterial segment (SA), and 6.6% of venous segment (SV). In the midlle part were found respectively 62.5%, 18.9% and 18,6% for arteriovenous, venous and arterial segments. Arteriovenous, arterial and venous segments were inclertified in 72.2, 22.4 and 5.5 percents in ventral part of the spleen, respectively.

Distribuição do nervo fibular comum em fetos de equinos e descrição anatômica de pontos para bloqueio anestésico

The distribution of the nervus fibularis communis was analyzed in 30 equine fetuses, mongrel, from the collection of the Animal Anatomy Laboratory at the School of Veterinary Medicine of Universidade Federal de Uberlândia, which were injected and stored in an aqueous solution of 10% formaldehyde. It was found that this nerve emerges from the ischiadicus, divides itself into nervus fibularis profundus and nervus fibularis superficialis distributing to the musculi extensor digitorum lateralis, extensor digitorum longus, fibularis tertius, and tibialis cranialis. Drawing an imaginary line in the medial-lateral region of the tuberositatis tibia, the nervus fibularis communis may be blocked in its proximal portion, in the caudal third, between the tendon of insertion of the biceps femoris and the lateral side of the musculus gastrocnemius (medium third); and the nervus fibularis profundus may be blocked in the proximal tibia, cranio-distally to the nervus fibularis communis. The block of nervus fibularis profundus may be performed in two regions of the tibia: proximal, considering the imaginary line, distal to the site referred to the nervus fibularis communis, and caudal to that described for the nervus fibularis profundus; and distal, on the lateral side of the tibiotarsal joint, between the tendons of insertion of the musculi extensor digitorum lateralis and extensor digitorum longus.

Ultrastructure of the bullfrog (Lithobates catesbeianus-Shaw, 1802) oviduct in different seasons

The bullfrog (Lithobates catesbeianus) is an exotic animal that adapted perfectly to the climatic conditions of Brazil after introduction in the country. These climatic conditions favor the reproduction and fattening of bullfrogs. However, the development of the bullfrog is significantly reduced in colder regions because low temperatures affect the secretion of gonadotropins and change the sensitivity of the germinal epithelium to gonadotropic hormones. Thus, the temperature and photoperiod are abiotic factors that influence the life cycle of this species, especially with regard to reproduction. Samples from different regions of the oviducts (the infundibulum, magnum, and isthmus) of 9 bullfrogs were collected in the different seasons of the year. The samples were fixed and processed for analysis with scanning and transmission electron microscopy. A comparison of the morphology of the oviducts collected during different seasonal periods suggests that the frogs have greater reproductive potential in the spring due to the development of the structures related to the oviduct, presence of developed cilia, and electron‐dense granules. However, seasonal changes were noted in the animal throughout the year in preparation for reproduction during the spring and summer. Microsc. Res. Tech. 76:523–532, 2013.

Distribution of common peroneal nerve in equine fetuses and anatomical description of sites for anesthetic block

The distribution of the nervus fibularis communis was analyzed in 30 equine fetuses, mongrel, from the collection of the Animal Anatomy Laboratory at the School of Veterinary Medicine of Universidade Federal de Uberlândia, which were injected and stored in an aqueous solution of 10% formaldehyde. It was found that this nerve emerges from the ischiadicus, divides itself into nervus fibularis profundus and nervus fibularis superficialis distributing to the musculi extensor digitorum lateralis, extensor digitorum longus, fibularis tertius, and tibialis cranialis. Drawing an imaginary line in the medial-lateral region of the tuberositatis tibia, the nervus fibularis communis may be blocked in its proximal portion, in the caudal third, between the tendon of insertion of the biceps femoris and the lateral side of the musculus gastrocnemius (medium third); and the nervus fibularis profundus may be blocked in the proximal tibia, cranio-distally to the nervus fibularis communis. The block of nervus fibularis profundus may be performed in two regions of the tibia: proximal, considering the imaginary line, distal to the site referred to the nervus fibularis communis, and caudal to that described for the nervus fibularis profundus; and distal, on the lateral side of the tibiotarsal joint, between the tendons of insertion of the musculi extensor digitorum lateralis and extensor digitorum longus.

Distribuição do nervo ibular comum em fetos de equinos e descrição anatômica de pontos para bloqueio anestésico

The distribution of the nervus fibularis communis was analyzed in 30 equine fetuses, mongrel, from the collection of the Animal Anatomy Laboratory at the School of Veterinary Medicine of Universidade Federal de Uberlândia, which were injected and stored in an aqueous solution of 10% formaldehyde. It was found that this nerve emerges from the ischiadicus, divides itself into nervus fibularis profundus and nervus fibularis superficialis distributing to the musculi extensor digitorum lateralis, extensor digitorum longus, fibularis tertius, and tibialis cranialis. Drawing an imaginary line in the medial-lateral region of the tuberositatis tibia, the nervus fibularis communis may be blocked in its proximal portion, in the caudal third, between the tendon of insertion of the biceps femoris and the lateral side of the musculus gastrocnemius (medium third); and the nervus fibularis profundus may be blocked in the proximal tibia, cranio-distally to the nervus fibularis communis. The block of nervus fibularis profundus may be performed in two regions of the tibia: proximal, considering the imaginary line, distal to the site referred to the nervus fibularis communis, and caudal to that described for the nervus fibularis profundus; and distal, on the lateral side of the tibiotarsal joint, between the tendons of insertion of the musculi extensor digitorum lateralis and extensor digitorum longus.

ORIGIN AND DISTRIBUTION OF THE BASILAR ARTERY IN THE ENCEPHALON OF ZEBUINE BOVINE FETUSES

En el presente trabajo utilizamos 30 encefalos de fetos de bovinos cruzados con cebu, inyectados con latex coloreado rojo y fijados en solucion de formaldehido al 20%, seguido de una minuciosa diseccion. La arteria basilar tiene origen a partir de la convergencia del ramo caudal de la arteria carotida del encefalo (antimeros derecho e izquierdo), en el 100% de los casos, evidenciando una disminucion progresiva de su calibre rostro-caudal. Esto sugiere que el flujo sanguineo se produciria en tal sentido, donde existen algunas ramas colaterales de la arteria basilar: arteria cerebelar caudal y arterias que se dirigen al puente y a la medula oblonga