Biology SL
Biology SL
4
Chapters
553
Notes
Theme A - Unity & Diversity
Theme A - Unity & Diversity
Theme B - Form & Function
Theme B - Form & Function
Theme C - Interaction &  Interdependence
Theme C - Interaction & Interdependence
Theme D - Continuity & Change
Theme D - Continuity & Change
IB Resources
Theme D - Continuity & Change
Biology SL
Biology SL

Theme D - Continuity & Change

Understanding Hormonal Control in Pregnancy

Word Count Emoji
471 words
Reading Time Emoji
3 mins read
Updated at Emoji
Last edited on 14th Jun 2024

Table of content

Hey, Biology Rockstars!🎸 Ever wondered how your baby cousin came into the world? Spoiler: It wasn't delivered by a stork. Let's dive into the rollercoaster of hormones that turn a fertilized egg into a crying baby!

Key Players in the Game 🏀

  • Placenta - Your mom's internal baby-support system!
  • Oestradiol and Progesterone - The hormonal VIPs.
  • Corpus Luteum - An early pregnancy VIP, but not for long.
  • Oxytocin - The "let's get this baby out" hormone!
  • Myometrium - The muscular wall of the uterus, basically the bouncer at Club Uterus.
  • Cervix - The door that baby has to pass through to enter the world.

Placenta Takes Charge 🌟

What Happens

By the 9th week of pregnancy, the placenta secretes oestradiol and progesterone in significant amounts.

 

Real-World Example

Think of the placenta like a backup generator. Until week 9, the corpus luteum handles the job, but then the placenta takes over. If the handoff messes up, there’s a risk of miscarriage. 🚨

Progesterone - The "Chill Pill" 🍹

What Happens

Progesterone keeps the uterus relaxed by

  • Inhibiting oxytocin secretion.
  • Preventing myometrium from contracting.

Real-World Example

Progesterone is like a security guard keeping fans away from a celebrity (the baby). It makes sure no one's disturbing the VIP until it’s showtime!

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IB Resources
Theme D - Continuity & Change
Biology SL
Biology SL

Theme D - Continuity & Change

Understanding Hormonal Control in Pregnancy

Word Count Emoji
471 words
Reading Time Emoji
3 mins read
Updated at Emoji
Last edited on 14th Jun 2024

Table of content

Hey, Biology Rockstars!🎸 Ever wondered how your baby cousin came into the world? Spoiler: It wasn't delivered by a stork. Let's dive into the rollercoaster of hormones that turn a fertilized egg into a crying baby!

Key Players in the Game 🏀

  • Placenta - Your mom's internal baby-support system!
  • Oestradiol and Progesterone - The hormonal VIPs.
  • Corpus Luteum - An early pregnancy VIP, but not for long.
  • Oxytocin - The "let's get this baby out" hormone!
  • Myometrium - The muscular wall of the uterus, basically the bouncer at Club Uterus.
  • Cervix - The door that baby has to pass through to enter the world.

Placenta Takes Charge 🌟

What Happens

By the 9th week of pregnancy, the placenta secretes oestradiol and progesterone in significant amounts.

 

Real-World Example

Think of the placenta like a backup generator. Until week 9, the corpus luteum handles the job, but then the placenta takes over. If the handoff messes up, there’s a risk of miscarriage. 🚨

Progesterone - The "Chill Pill" 🍹

What Happens

Progesterone keeps the uterus relaxed by

  • Inhibiting oxytocin secretion.
  • Preventing myometrium from contracting.

Real-World Example

Progesterone is like a security guard keeping fans away from a celebrity (the baby). It makes sure no one's disturbing the VIP until it’s showtime!

Unlock the Full Content! File Is Locked Emoji

Dive deeper and gain exclusive access to premium files of Biology SL. Subscribe now and get closer to that 45 🌟