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Menstrual cycle
Menstrual cycle
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Cards (32)
What is puberty?
The period of developing
secondary sexual characteristics
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What triggers the process of puberty?
Reproductive hormones
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What hormone is mainly responsible for male puberty?
Testosterone
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Where is testosterone produced in men?
In the
testes
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What hormone is primarily responsible for female puberty?
Estrogen
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Where is estrogen produced in women?
In the
ovaries
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What are the four stages of the menstrual cycle?
Menstruation
Uterus lining buildup
Ovulation
Uterus lining maintenance
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What is the average length of a menstrual cycle?
Around
28
days
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What does the red line in the menstrual cycle graph represent?
The thickness of the
uterus
lining
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What happens during stage one of the menstrual cycle?
Menstruation
occurs with bleeding
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How long does menstruation typically last?
About
four
days
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What occurs during stage two of the menstrual cycle?
The
uterus lining
builds up again
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How long does stage two last?
Around
ten
days
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What is the purpose of the thick spongy layer formed in stage two?
To
prepare
for a
fertilized
egg
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What happens during stage three of the menstrual cycle?
Ovulation
occurs with
egg
release
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How long does ovulation last?
One
day
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What occurs during stage four of the menstrual cycle?
The
uterus lining
is
maintained
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How long does stage four last?
From
day 14
to
day 28
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What happens if no fertilized egg reaches the uterus?
The
uterus
lining
breaks
down
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What happens if a fertilized egg implants in the uterus?
The
menstrual cycle
stops
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What hormones are involved in the menstrual cycle?
Estrogen
Progesterone
Luteinizing hormone (LH)
Follicle stimulating hormone (FSH)
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What hormone stimulates the uterus lining to grow?
Estrogen
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When does estrogen level increase during the cycle?
During
stage two
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What role does progesterone play in the menstrual cycle?
Maintains the
lining
of the
uterus
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What happens if progesterone levels drop?
The
uterus
lining
breaks
down
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Where are LH and FSH produced?
In the
pituitary gland
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What is the role of FSH in the menstrual cycle?
Stimulates
egg
maturation
in
ovaries
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What does LH stimulate on day 14?
The
release
of the
egg
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How do the hormones interact during the menstrual cycle?
FSH
stimulates
estrogen
production
Estrogen
inhibits
FSH
(
negative
feedback)
High
estrogen
levels stimulate
LH
release
Progesterone
inhibits both
LH
and
FSH
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What is an example of negative feedback in the menstrual cycle?
Estrogen
inhibits
FSH
production
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What happens when estrogen levels are high?
They stimulate the release of
LH
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What does progesterone inhibit?
Both
LH
and
FSH
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