1. Luteinizing Hormone Ovulation
Understanding Luteinizing hormone
http://lhhormone.org
Ruth asks…
The adenohypophyseal hormone that triggers ovulation is
estrogen.?
True or False
*I said false because I thought the Luteinizing hormone (LH) causes ovulation.
Any help would be great.
Pregnancy Advisor’s answers:
False.
Yeap, ovulation phase is caused by a surge in LH, after an estrogen peak build up in the
follicular phase in the ovarian cycle.
LH is needed to activate prostaglandin to regulate proteolytic degradtion of the ovary cell, so
secondary oocyte can then be released. But to a certain extent, because the ovray left-over
follicular cells (thecal and granular cells) still got to form your corpus luetum later,
You got it right.
1/6
2. Helen asks…
The Hormone that triggers ovulation of an egg from the female
ovary is?
a – progesterone
b – interstitial cell-stimulating hormone
c – luteinizing hormone
d – follicle-stimulating hormone
e – prolactin
Pregnancy Advisor’s answers:
Progesterone
2/6
3. Lisa asks…
The hormone that normally triggers mammalian ovulation is?
a. progesterone
b. follicle-stimulating hormone
c. luteinizing hormone
d. estrogen
e. prolactin
Pregnancy Advisor’s answers:
C – lutenizing hormone
This is released from the pituitary gland when estrogen levels peak
Sandy asks…
3/6
4. This hormone stimulates ovulation.?
testosterone
B.
progesterone
C.
gonadotropin-releasing hormone (GnRH)
D.
luteinizing hormone (LH)
E.
follicle-stimulating hormone (FSH)
Pregnancy Advisor’s answers:
The above user is incorrect.
Ovulation happens when the follicle bursts, releasing the oocyte. This is caused by a spike of
Luteinizing hormone (LH).
Therefore, your answer is D.
Laura asks…
4/6
5. At what point does the secondary oocyte complete meiosis?
At what point does the secondary oocyte complete meiosis?
Awhen the luteinizing hormone triggers ovulation
Bwhen acrosomal enzymes begin to break down the egg’s jelly coat
Cafter it is penetrated by a sperm cell
Dwhen the secondary oocyte implants in the endometrium of the uterus
Pregnancy Advisor’s answers:
C after it is penetrated by a sperm cell
Donna asks…
Ovulation is stimulated by the sharp increase of which of the
following hormones?
a. follicle stimulating hormone
b. estrogen
c. luteinizing hormone
d. progesterone
5/6
6. Pregnancy Advisor’s answers:
(B) Estrogen
EDIT:
I’m wrong, its actually (A) and (C)
“Ovulation is triggered by a spike in the amount of FSH and LH released from the pituitary
gland”
http://en.wikipedia.org/wiki/Ovulation#Overview
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Answering Your Questions on LH Surge
http://LHSurge.org
Luteinizing Hormone Ovulation
6/6
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