Resumo
The purpose of this research was to make the comparative histological evaluation of uterus and ovaries of nulliparous and multiparous cats and others submitted to hormonal treatment with progesterone. Ten samples of right and left uterine horns and ovaries for each group had been used for this end. The material collected soon after surgery, was processed routinely, stained with haematoxylin and eosin and examined to the light microscope. The uterus of nulliparous cats presented thin endometrium with discrete longitudinal folds coated by cubical simple epithelium. The glands were discrete, in small number and reduced diameter, formed for low cubical or cylindrical epithelium. However in multiparous cats, the endometrium was plaited, irregular and thick, coated for cylindrical simple epithelium with vacuolated cells, some cases, with dilated glands formed for flattened epithelium, the same occurring for the ones treated, that beyond endometrial reduction and branched, presented innumerable high projections and richly ramified coated by cubical and cylindrical simple epithelium with vacuolated cells. The glands of reduced diameter were formed for cubical or cylindrical simple epithelium and the dilated glands show secretion and cystic appearance. The myometrial layers in nulliparous cats were regular with great amount of blood vessels of great diameter between the layers, in contr
Resumo
In order to verify the morphological changes of the female reproductive tract of Nelore cows, 20 right and left ovaries of 20 3-to-7-years-old cows and 20 heifers aged approximately 2 years were collected in a slaughterhouse. After anatomical measurements and histological analysis were carried out, conclusions were: 1 - The highest measurements and weights were of the ovaries of cows, as well as the right organs for two groups; however, height showed no significant difference between groups, although significant difference was documented between sides; 2 - The frequency of corpora lutea was higher for cows and significantly greater in the right side in the group of cows and heifers; the frequency of mature follicles was higher for heifers, though no significant difference between the sides was observed in both groups; 3 - The ovaries of cows showed a more developed cortical as compared to the medulla, whereas heifers presented the medullar region more extensive than the cortical; 4 - The coating epithelium varied from pavimentous to cubic, and the tunica albuginea and interstitial tissue were typical for cows and heifers; 5 - Primordial, primary and growing follicles were present in small numbers in cows, whereas a great quantity of the two latter was seen in heifers; 6 – The mature follicles were typical, although vesicular structures near the oocytes were
Com a finalidade de se verificar as variações morfológicas do aparelho reprodutor de bovinos fêmeas da raça Nelore, foram coletados em abatedouro, 20 ovários direitos e esquerdos de 20 vacas com idade variando de 3 a 7 anos e de 20 novilhas com idade aproximada de 2 anos. Após as mensurações anatômicas e análises histológicas, concluiu-se que: 1- As maiores mensurações e pesos foram dos ovários das vacas e dos lados direitos para os dois grupos; porém a altura não apresentou diferença significativa entre os grupos, mas apresentou diferença significativa entre os lados, 2- A freqüência de corpos lúteos foi maior para as vacas e significativamente maior para os lados direitos nos grupos de vacas e novilhas e a freqüência de folículos maturos foi maior para as novilhas, porém, sem diferença significativa entre os lados para ambos os grupos, 3- Os ovários das vacas mostraram cortical mais desenvolvida que a medular e as novilhas acusaram a medular mais extensa que a cortical, 4- O epitélio de revestimento variou de pavimentoso a cúbico, a túnica albug&