Changes

==Structure==

==Structure==

Two types of luteal cells are present within the corpus luteum:

 

:'''Small luteal cells''' (<20µm)

There are two types of luteal cells present within the corpus luteum:

:* 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 [[Ovaries_Endocrine_Function_- Anatomy & Physiology#Progesterone|Progesterone]] synthesis.  

'''1. Small luteal cells''' (<20µm)

:'''Large luteal cells''' (20-40µm)

 

:*They are formed from Follicular Granulosa cells that have undergone hypertrophy.  

Small luteal cells are formed from remodelled '''follicular theca cells'''. These cells proliferate during luteinisation. Small luteal cells contain many lipid droplets within their cytoplasm, which is an important source of cholesterol esters for [[Ovaries_Endocrine_Function_- Anatomy & Physiology#Progesterone|progesterone]] synthesis.  

:*These large luteal cells are the endocrine cells of the corpus luteum producing large amounts of the hormone [[Ovaries_Endocrine_Function_- Anatomy & Physiology#Progesterone|Progesterone]].

 

:*In some species secretory granules containing oxytocin or relaxin may be found close to the cell membrane.

'''2. Large luteal cells''' (20-40µm)

The corpus luteum may contain a small cavity at its centre, a remnant of the follicular antrum, but many do not.

 

Corpora Lutea are well vascularised. This is important for supply of substrates to steriodogenic luteal cells aswell as removal of steriod products.

Large luteal cells are 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 [[Ovaries_Endocrine_Function_- Anatomy & Physiology#Progesterone|progesterone]].  

 

In some species, secretory granules containing '''oxytocin''' or '''relaxin''' may be found close to the cell membrane. The corpus luteum may contain a small cavity at its centre, a remnant of the '''follicular antrum''', but many do not. Corpora Lutea are well vascularised. This is important for supply of substrates to '''steriodogenic luteal cells''' aswell as removal of steriod products.

==Function==

==Function==