Female Hormones HW Questions Flashcards
What is menarche?
onset of menstruation
How long is the average menstrual cycle (female sexual cycle)?
28 days
What is the normal range of a menstrual cycle?
21-35 days
What is polymenorrhea?
menstrual flow less than 21 days apart
What is oligomenorrhea?
menstrual flow greater than 35 days apart
What is amenorrhea?
absent menstrual flow not associated with pregnancy
What are the 2 primary cycles associated with the female sexual cycle?
ovarian cycle and uterine cycle
Which female organs play a role in the menstrual cycle?
ovary and uterus
Which organ controls the female sexual cycle?
ovary
What is oogenesis?
production of an ovum (egg)
When does oogenesis begin in the female?
in utero, before birth, around 5th week of development
What is the name of the female stem (germ) cell?
oogonia
What happens to the primary oocyte until menarche?
stays suspended in that phase (arrested in prophase 1)
What happens to the primary oocyte during the monthly menstrual cycle?
divides into a secondary oocyte and polar body
What type of oocyte is released during ovulation?
secondary oocyte
How many chromosomes does a secondary oocyte contain?
23
What meiotic phase does the secondary oocyte stay in until a sperm enters the egg?
metaphase 2
Approx how many oocytes are viable at puberty?
about 300,000 (just remember that it is a small fraction of the amount initially produced)
What is the hypothalamic pituitary axis for female reproductive physiology?
hypothalamus releases GnRH> anterior pituitary releases FSH and LH> FSH is primarily responsible for estrogen production and LH is primarily responsible for progesterone production
Follicular phase, ovulation and luteal phase are which part of the menstrual (female sexual) cycle?
ovarian
Which hormone initiates the follicular phase?
FSH
A few days after the follicular phase has begun this hormone is released
LH
What is the overall function of the follicular phase?
develop a primary oocyte into a mature ovum (egg) and produce estrogen
What is the 1st type of cell to proliferate around the primary follicle in the follicular phase?
granulosa