Menstrual Cycle Flashcards
What starts the menstruated cycle?
FSH
Purpose of FSH
Stimulates maturation if s follicle in the ovary
What triggers ovulation?
Surge in LH
What is the corpus luteum
After ovulation, follicular cells turn into a corpus luteum which secretes oestrogen and progesterone
What happens to the corpus luteum if pregnancy does not occur?
It degenerates
Estrogen and progesterone inhibit the increased release of what
FSH
LH
What triggers ovulation?
Surge in LH and FSH
Three phases of the menstrual cycle
Menstrual
Proloferative
Secretory
Purpose of the proliferative phase
Follicles develop and mature to prepare for ovulation
Purpose of the secretory stage
After ovulation the corpus luteum secretes progesterone, preparing endometrium for implantation of an embryo
Purpose of menstrual stage
Lining of the uterus (endometrium) is shed and menstrual flow leaves uterus
Two phases of the ovarian cycle
Follicular phase
Luteal phase
What happens in the luteal phase
Ovaries release an egg
What happens in the follicular phase
Follicles nature, ending with ovulation
Second half of the ovarian cycle, what is the name of the empty sac once the ovum has been released?
Corpus luteum