[The intrafollicular pressure of tertiary follicles in relation to their diameter in the cow ovary].
In ovaries of 31 cows, which were in prooestrus, the diameters of all visible tertiary follicles and their intrafollicular pressure were measured. The pressure increased largely, if the diameter of the follicles was higher than 5 mm. This high intrafollicular pressure reached the filtering pressure of capillaries. So it is possible, that the peripheral portions of the theca interna from the follicles become ischaemic. The following metabolic acidosis activates the collagenolytic enzyme in the follicular wall. It is concluded that these enzymes could be active in the digestion of the follicle wall during ovulation. In that time the high intrafollicular pressure in spite of higher diameter (over 10 mm) slowly decreased.
Draehmpaehl
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Institut für Anatomie, Veterinärmedizinische Fakultät-Standort Mitte-der Freien Universität Berlin.
D000818:Animals; D002417:Cattle / Q000033:anatomy & histology / Q000502:physiology*; D005260:Female; D006080:Ovarian Follicle / Q000033:anatomy & histology / Q000502:physiology*; D011312:Pressure; D011359:Proestrus / Q000502:physiology*; D012044:Regression Analysis
Untersuchung von intrafollikulärem Druck an Tertiärfollikeln in Abhängigkeit von ihrem Durchmesser an Rinderovarien.