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Biology
Topic 7 Animal Coordination Control and Homeostatis
Reproductive Hormones - Puberty & Menstrual Cycle
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Created by
Fred oldham
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Cards (31)
What is the main topic of the video?
Puberty
and the
menstrual cycle
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What triggers puberty in adolescents?
Reproductive hormones
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What are the four stages of the menstrual cycle?
Menstruation
, buildup,
ovulation
, maintenance
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What happens during puberty?
Development of
secondary sexual characteristics
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At what ages does puberty usually begin?
Between 8 and 14
years
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What hormone triggers puberty in males?
Testosterone
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What hormone triggers puberty in females?
Estrogen
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What does estrogen trigger in females during puberty?
Menstrual cycle
and physical changes
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What is the role of the uterus in the menstrual cycle?
Builds
up
and
breaks
down
lining
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What are the ovaries responsible for?
Storing
eggs
and producing
hormones
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What is the average length of a menstrual cycle?
Around
28
days
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What does stage one of the menstrual cycle involve?
Menstruation
and bleeding
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How long does menstruation typically last?
About
4 days
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What occurs during stage two of the menstrual cycle?
Uterus lining
builds up
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What is the purpose of the thick spongy layer in stage two?
To prepare for a
fertilized egg
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What happens during ovulation?
The egg is released from the
ovary
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How long does ovulation last?
One
day
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What happens if no fertilized egg reaches the uterus?
The cycle restarts with
menstruation
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What occurs if a fertilized egg implants in the uterus?
The
menstrual cycle
stops
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What hormone stimulates the growth of the uterus lining?
Estrogen
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What role does progesterone play in the menstrual cycle?
Maintains the
uterus lining
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What happens to progesterone levels if the egg is not fertilized?
They
drop
, causing
lining
breakdown
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What is the function of FSH in the menstrual cycle?
Stimulates egg maturation in
ovaries
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What does LH do during the menstrual cycle?
Stimulates egg release on
day 14
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Where are FSH and LH produced?
In the
pituitary gland
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How do estrogen and FSH interact during the menstrual cycle?
Estrogen
inhibits
FSH
release
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What is negative feedback in the context of hormone regulation?
High
hormone levels
inhibit their own
release
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What happens to LH levels during ovulation?
They
spike
,
causing
ovulation
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What occurs at the end of the menstrual cycle?
Progesterone
levels increase, inhibiting
LH
and
FSH
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Where can students find additional resources related to this topic?
On the website
cognito.org
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What types of resources are available on the cognito.org website?
Videos
, questions,
flashcards
, and progress tracking
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