Menstruation
What 2 things does estrogen cause to happen in the follicle stage (days 6-14)?
1) uterus lining thickens, 2) more LH is being made
Which days of the cycle does a female have her period?
1-5
About how many days is a menstrual cycle?
28
What is the purpose of FSH?
Causes maturation of egg
Whati s the purpose of estrogen?
Development of secondary sex characteristics, prepares uterus for pregnancy
What is FSH?
Follicle stimulating hormone
Where is progesterone secreted?
In the corpus luteum in the ovaries
Where is estrogen secreted?
In the follicles in the ovaries
What happens to the lining of the uterus during menstruation (days 1-5)?
It is shed out of the body
What is LH
Lutenizing hormone
What is the purpose of progesterone?
Maintain uterus for pregnancy
Where is FSH secreted?
Pituitary gland
Where is FSH secreted?
Pituitary gland (brain)
What happens when the corpus lutem secretes progesterone in the corpus lutem stage (days 15-28)?
The endometrium thickens
What is the corpus luteum?
The place in the ovaries where there used to be a follicle (after ovulation).
What happens to the follicles during the menstruation (days 1-5)?
They begin to mature
What happens to the follicles during the follicle stage (days 6-14)?
They continue to develop, but only one egg will be released
How do birth control pills work?
They trick the body into thinking it's pregnant with estrogen and progesterone, so ovulation doesn't occur.
What is menstruation?
When a female sheds the lining of the uterus when the egg has not been fertilized; usually called her "period"
What happens to the progesterone level during menstruation (days 1-5)?
decreases
What happens to the FSH level during the destructive phase (days 1-5)?
increases
What happens when the LH peaks follicle stage (days 6-14)?
ovulation (an egg is released)
