12 Questions
What causes cyclic uterine changes?
Hormonal changes during the ovarian cycle
What hormone stimulates the growth of myometrium and endometrium?
Estrogen
What is the function of progesterone in the menstrual cycle?
Prepares endometrium for implantation
What happens when there is a fall in hormone levels during the menstrual cycle?
Prostaglandin is released, causing vasoconstriction and disrupting blood supply to endometrium
What is the role of prostaglandin in the menstrual cycle?
Causes uterine myometrium contraction, expelling blood and endometrium as menstrual flow
What can cause dysmenorrhea?
Excessive uterine myometrium contraction
What can cause excessive menstrual flow?
Blood clotting disorder
What can cause menopause?
Normal aging process
What happens if fertilization and implantation occur in the menstrual cycle?
Corpus luteum continues to grow and produce progesterone and estrogen
What causes abortion if it occurs at 4 months?
Surgical removal of corpus luteum
What is the role of estrogen in the menstrual cycle?
Stimulates growth of myometrium and endometrium
What is the role of progesterone in the menstrual cycle?
Prepares endometrium for implantation
Study Notes
- Cyclic uterine changes are caused by hormonal changes during the ovarian cycle.
- Estrogen stimulates growth of myometrium and endometrium.
- Progesterone prepares endometrium for implantation.
- Fall in hormone levels stimulates prostaglandin release, causing vasoconstriction and disrupting blood supply to endometrium.
- Prostaglandin also causes uterine myometrium contraction, expelling blood and endometrium as menstrual flow.
- Excessive contraction causes dysmenorrhea (pain).
- Blood clotting disorder causes excessive flow.
- Malnutrition causes menopause.
- Corpus luteum continues to grow and produce progesterone and estrogen if fertilization and implantation occur.
- Surgical removal of corpus luteum at 4 months causes abortion.
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