Luteal Phase Flashcards
What is happening in the luteal phase?
Luteinization, synthesis and secretion,luteolysis, and metestrus and diestrus
Which hormone is dominant in the luteal phase?
Progesterone
What first happens in the luteal phase?
The formation of the corpus luteum by deteriorated granulosa and theca interna cells
For the CL to form what must first occur?
Ovulation
After ovulation what is the process of the theca interna and granulosa cells turning into luteal tissue called?
Luteinization
What is the goal of Luteinization ?
Produce progesterone
After Luteinization, what structure forms that is a local hemorrhage and makes of the Canterna and granulosa cells?
Corpus hemorrhagicum
What hormone increases with the formation of the CH?
LH
When granulosa cells turn into large luteal cells and theca interna cells turn into a small luteal tells cells what is the structure called?
CL
Large Luteal cells undergo what?
Hypertrophy
What do small luteal cells undergo?
Hyperplasia
What are the three primary targets of progesterone?
Hypothalamus, uterus, alveoli
What promotes the endometrium to become secretory?
Progesterone
Why is progesterone considered an inhibitor?
Because it decreases GnRH LH and FSH secretion and it stops the LH surge
Which structure is required for luteolysis?
Uterus
What does the nonpregnant endometrium secrete?
PGF2α
Where does PGF2 alpha go after being secreted and in high concentrations?
Uterine vein
How does PGF2a get exchanged into the ovarian artery?
By a countercurrent exchange
What do large luteal cells secrete?
 oxytocin
What are the four interactions occurring between luteolysis?
Concentration of before, receptors of T4, secretion of oxytocin, and secretion of PGF2α
What does the structure regress into after luteolysis?
Corpus albicans
