Corpus Luteum - Anatomy & Physiology
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Revision as of 08:25, 10 September 2008 by Lwilkie
- After ovulation, the wall of the ruptured follicular cavity folds in.
- Slight haemorrhage occurs at the site of ovulation and fills the former cavity.
- This is known as the Corpus Haemorrhagicum.
- As the blood is resorbed, a solid Corpus Luteum is formed by proliferation of granulosa and theca intera cells as well as blood vessels. This remains on the surface of the ovary.
- In the non-pregnant animal, corpora lutea are transient structures.
- Cyclic corpora lutea undergo proliferation and vascularisation directly after ovulation.
- The corpora lutea then regress and degenerate into a connective tissue scar, the Corpus Albicans.
- If the ovum is fertilised, the corpus luteum remains fully developed and active throughout at least part of the pregnancy.
- Corpora lutea produce progesterone.
- Progesterone prepares and maintains the uterus for implantation of the fertilised ovum.