. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. OVARY — (ABNORMAL ANATOMY). the parenchyma, or to the walls of particular follicles, or may affect all these parts together. Hyperaemia of particular follicles, with con- siderable enlargement of the sac and effusion of blood into the cavity of the follicle, is not unfrequently observed as an abnormal condi- tion. But hyperaemia of single follicles with effusion of blood into the cavity has been already described, as being also a natural state of the Graafian follicle, which is preparing for clehiscence and discharge of
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. OVARY — (ABNORMAL ANATOMY). the parenchyma, or to the walls of particular follicles, or may affect all these parts together. Hyperaemia of particular follicles, with con- siderable enlargement of the sac and effusion of blood into the cavity of the follicle, is not unfrequently observed as an abnormal condi- tion. But hyperaemia of single follicles with effusion of blood into the cavity has been already described, as being also a natural state of the Graafian follicle, which is preparing for clehiscence and discharge of an ovum.* It may be asked, therefore, in what respect does the normal differ from the abnormal state, and by what characteristics may the one be distinguished from the other ? It appears to me that Rokitansky, in the account which he has given of hyperaemia of the Graafian follicle f, has included under one head both the natural and the morbid condition ; for his description will very well apply to the rising follicle, in its second stage, when the escape of blood into the cavity has been shown to be a normal, and in some animals a constant occurrence. The presence, therefore, of blood within the follicle, for the reasons al- ready fully given (p. 556.), must not be regarded as necessarily affording evidence of a morbid state. There are, however, certain pecu- liarities in the condition of the unhealthy fol- licle, by which it may be distinguished from that which is natural. The natural follicle, when preparing for dehiscence, is always near the surface, and often projects considerably above the level of the ovary (). Its coats are unequally thick ; the thinnest portion being always found at the most prominent point of the follicle. There is considerable vascularity about this point, plainly visible externally, and here the process of attenuation and ab- sorption continues to be progressive until the sac spontaneously ruptures. The walls of the follicle are at this st
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