Hormone Regulation In the Reproductive System Flashcards
MEN AND WOMAN What secretes FSH and LH?
The pituitary gland.
MEN What do FSH and LH do? Why?
They stimulate the testes to produce testosterone.
MEN Testosterone produces what?
Sperm.
MEN These hormones, (testosterone, FSH, and LH) remain high as long as ___ _____ ___ _____.
A man is fertile.
WOMAN What is cyclical to produce an egg once a month?
FSH and LH.
WOMAN What does FSH do to the ovum in the ovaries?
It matures the egg.
WOMAN The maturing egg will increase what in the ovary?
Levels of estrogen.
WOMAN What does LH do to the ovum in the ovaries?
It releases the egg.
What is corpus lutium?
The shell of the egg that has been released.
What does corpus lutium produce? Why?
Progesterone and estrogen to enrich the blood lining.
What is oogenesis?
It’s the process of the egg formation.
Where and when does oogenesis occur?
In the ovaries and just before birth.
When does oogenesis happen for the first time?
Puberty.
What is spermatogenesis?
The sperm production.
What male hormones are regulated?
Testosterone.
How are the levels of testosterone?
They’re always high.
What tell the testes to produce testosterone?
FSH and LH.
In the first half of the menstrual cycle, levels of estrogen rise and do what?
Make the lining of the ovaries.
After how many days does LH come in?
After half the days of the regular cycle, (for ex if the cycle is 28 days it comes in after 14 days).
What is ovulation?
When the egg is released from the ovary.
When does fertilization occur?
Right after ovulation.
The egg travels through what to get to the uterus?
The fallopian tubes.
What prepares the uterus lining?
High levels of progesterone.
What happens when a woman becomes pregnant?
The egg becomes fertilized by a sperm and attaches itself onto the uterine wall.
What happens if the egg does not get fertilized?
It dissolves or gets absorbed into the body.
So what’s happening when you have your period?
Progesterone and estrogen levels decrease and the thickened lining of the uterus is shed.
If estrogen and progesterone levels are low, what happens?
FSH and LH hormones are secreted from the pituitary gland.
If estrogen and progesterone levels are high, what happens?
FSH and LH secretion slows down or stops so that the ovaries don’t release another ovum.
Hormones produced in the ovaries can affect the _______.
Uterus.
Cramps are cause by what?
Prostaglandin.
What is prostaglandin?
A hormone in the body that makes the smooth muscle in the uterus contract to shed the lining.
MEN: FSH and LH cause the testicles to secrete _____, which are what and which secrete what?
Androgens which are male sex hormones that secrete testosterone.
WOMAN: FSH causes ________ to develop.
Follicles.
LH causes follicle to burst open to _______ the ovum.
Release.
The pituitary gland controls what?
The onset of puberty.
