224
edits
Changes
Jump to navigation
Jump to search
Corpus Luteum Formation - Anatomy & Physiology (view source)
Revision as of 15:41, 22 July 2008
, 15:41, 22 July 2008no edit summary
'''Tissue Remodelling'''
'''Tissue Remodelling'''
*PGE2 released locally within the ovary causes activation of the body's tissue remodelling enzyme plasmin from its zymogen plasminogen. Activated Plasmin dissolves clot of the corpus Haemorrhagicum, formed due to disruption of follicular blood vessels at ovulation. Plasmin also helps in the remodelling of follicular basement membrane into copus luteum connective tissue.
*PGE2 released locally within the ovary causes activation of the body's tissue remodelling enzyme plasmin from its zymogen plasminogen. Activated Plasmin dissolves clot of the corpus Haemorrhagicum, formed due to disruption of follicular blood vessels at ovulation. Plasmin also helps in the remodelling of follicular basement membrane into copus luteum connective tissue.
*The organised follicle layers of Innner Granulosa cells and outer Theca cells is lost when the follicle implodes after ovulation. These cells become mixed within the copus luteum structure.
*There is an increase in the pigment lutein within the leteal cells.
*There is an increase in the pigment lutein within the leteal cells.
*There is development of smooth endoplasmic reticulum within luteal cells due to the increase in steroid production.
*There is development of smooth endoplasmic reticulum within luteal cells due to the increase in steroid production.
'''Cell Differenciation'''
'''Cell Differenciation'''
*
Two types of luteal cells are present within the corpus luteum:
:'''Small luteal cells''' (<20µm)
:* Formed from remodelled Follicular Theca cells. These cells proliferate during luteinisation.
:*These cells contain many lipid droplets within their cytoplasm, an important source of cholesterol esters for [[Endocrine_System_-_Ovaries_-_Anatomy_%26_Physiology#Progesterone|Progesterone]] synthesis.
:'''Large luteal cells''' (20-40µm)
:*Formed from Follicular Granulosa cells that have undergone hypertrophy.
:*These large luteal cells are the endocrine cells of the corpus luteum producing large amounts of the hormone [[Endocrine_System_-_Ovaries_-_Anatomy_%26_Physiology#Progesterone|Progesterone]].
:*In some species secretory granules containing oxytocin or relaxin may be found close to the cell membrane.
'''Angiogenesis'''
'''Angiogenesis'''