HORMONES HELP (for menstrual cycle + pregnancy + birth) (1 Viewer)

[SadCeliac]

PLEASE someone help summarise these - I don't understand what they do, and which ones occur in what stages of menstrual cycle --> pregnancy --> birth

• LH
• FSH
• GnRH
• HCG
• Inhibin
• Oestrogen
• Progesterone
• Oxytocin
• Prolactin
• Relaxin

My understanding is:
LH, FSH, GnRH, HCG, Inhibin are all involved in ovulation/menstrual cycle (pre fertilisation)
Oestrogen and Progesterone are (somehow) involved throughout
Oxytocin == contractions for birth and prolactin/relaxin are also post birth for milk production/counteract oxytocin contractions

HELP THANKS <3

 

[its_ace21]

bro i sent u a photo

 

[its_ace21]

susss susssssss

crazy

 

[Unovan]

bro i sent u a photo

post it in the thread blud

 

[its_ace21]

post it in the thread blud

wait ill type it up, revision for me as well

 

[synthesisFR]

wait ill type it up, revision for me as well

i learnt this whole topic 5 minutes before the exam just for it to not be in the test hahahhah

 

[its_ace21]

FSH - released by the pituary gland during the menstrual cycle and causes a follicle in ovary to grow
LH - released by the pituary gland during the menstrual cycle and stimulates the follice to release an egg (ovulation)
GnRH - released by the pituary gland and stimulates both FSH and LH
HCG - released by the growing embryo during first trimester and maintains corpus luteam, thus maintaining progesterone + uterus lining
Inhibin - not sure, didnt look at
Oestrogen - released by ovary during menstrual cycle and thickens uterus lining
Progesterone - released by corpus luteam (in ovary) during menstrual cycle to : inhibit the release of FSH + LH, and maintain uterus lining, during pregnancy, suppresses uterine activitity to prevent embryo being expelled (miscarriage), as well as reducing the mother's immune response to foetal antigens, during birth, decreases first to no longer maintain uterus lining
Prolactin - stimulates milk production
Relaxin - during birth, further aids contractions (i think someone confirm)

 

[its_ace21]

SO READY FOR THIS EXAM

 

[SadCeliac]

FSH - released by the pituary gland during the menstrual cycle and causes a follicle in ovary to grow
LH - released by the pituary gland during the menstrual cycle and stimulates the follice to release an egg (ovulation)
GnRH - released by the pituary gland and stimulates both FSH and LH
HCG - released by the growing embryo during first trimester and maintains corpus luteam, thus maintaining progesterone + uterus lining
Inhibin - not sure, didnt look at
Oestrogen - released by ovary during menstrual cycle and thickens uterus lining
Progesterone - released by corpus luteam (in ovary) during menstrual cycle to : inhibit the release of FSH + LH, and maintain uterus lining, during pregnancy, suppresses uterine activitity to prevent embryo being expelled (miscarriage), as well as reducing the mother's immune response to foetal antigens, during birth, decreases first to no longer maintain uterus lining
Prolactin - stimulates milk production
Relaxin - during birth, further aids contractions (i think someone confirm)

why did i not see all this tysm

 

[its_ace21]

FSH - released by the pituary gland during the menstrual cycle and causes a follicle in ovary to grow
LH - released by the pituary gland during the menstrual cycle and stimulates the follice to release an egg (ovulation)
GnRH - released by the pituary gland and stimulates both FSH and LH
HCG - released by the growing embryo during first trimester and maintains corpus luteam, thus maintaining progesterone + uterus lining
Inhibin - not sure, didnt look at
Oestrogen - released by ovary during menstrual cycle and thickens uterus lining
Progesterone - released by corpus luteam (in ovary) during menstrual cycle to : inhibit the release of FSH + LH, and maintain uterus lining, during pregnancy, suppresses uterine activitity to prevent embryo being expelled (miscarriage), as well as reducing the mother's immune response to foetal antigens, during birth, decreases first to no longer maintain uterus lining
Prolactin - stimulates milk production
Relaxin - during birth, further aids contractions (i think someone confirm)

wait relaxin is produced during birth by idk, but it causes softening of cervix, everything else should be right tho

 

[Edzion education]

PLEASE someone help summarise these - I don't understand what they do, and which ones occur in what stages of menstrual cycle --> pregnancy --> birth

• LH
• FSH
• GnRH
• HCG
• Inhibin
• Oestrogen
• Progesterone
• Oxytocin
• Prolactin
• Relaxin

My understanding is:
LH, FSH, GnRH, HCG, Inhibin are all involved in ovulation/menstrual cycle (pre fertilisation)
Oestrogen and Progesterone are (somehow) involved throughout
Oxytocin == contractions for birth and prolactin/relaxin are also post birth for milk production/counteract oxytocin contractions

HELP THANKS <3

1. GnRH (Gonadotropin-Releasing Hormone):
   • Source: Hypothalamus.
   • Function: Stimulates the anterior pituitary to release FSH and LH.
   • Timing: Throughout the menstrual cycle, with surges especially before ovulation.
2. LH (Luteinizing Hormone):
   • Source: Anterior pituitary.
   • Function: Triggers ovulation and the formation of the corpus luteum.
   • Timing: A surge in LH levels causes ovulation around day 14 of a typical menstrual cycle.
3. FSH (Follicle Stimulating Hormone):
   • Source: Anterior pituitary.
   • Function: Stimulates the growth and maturation of ovarian follicles.
   • Timing: Levels rise in the first half of the menstrual cycle (follicular phase) to mature the ovarian follicles.
4. HCG (Human Chorionic Gonadotropin):
   • Source: Placenta (after implantation of the fertilized egg).
   • Function: Maintains the corpus luteum, which in turn produces progesterone during early pregnancy.
   • Timing: This is the hormone detected by pregnancy tests. Its levels rise rapidly after implantation.
5. Inhibin:
   • Source: Ovaries and testes.
   • Function: Inhibits the release of FSH (and to a lesser extent, LH) from the pituitary.
   • Timing: Produced by the follicles in the ovaries, its secretion increases following FSH stimulation and then acts to inhibit further FSH production.
6. Oestrogen (Estrogen):
   • Source: Ovaries, placenta (during pregnancy), and the body's fat tissue.
   • Function: Stimulates the lining of the uterus to grow, helps regulate the menstrual cycle, and supports the growth of the placenta and the fetus during pregnancy.
   • Timing: Levels rise in the first half of the menstrual cycle, peak just before ovulation, and support the endometrial lining in early pregnancy.
7. Progesterone:
   • Source: Ovaries (specifically the corpus luteum) and the placenta (during pregnancy).
   • Function: Prepares the endometrial lining for potential implantation, supports pregnancy by preventing uterine contractions, and prepares the breasts for milk production.
   • Timing: Levels rise after ovulation and remain elevated if there's a pregnancy. If no pregnancy occurs, its levels fall, leading to menstruation.
8. Oxytocin:
   • Source: Hypothalamus (stored in the posterior pituitary).
   • Function: Induces labor by causing the uterus to contract and stimulates milk ejection from the breasts.
   • Timing: Levels rise in response to childbirth and also in response to nipple stimulation when breastfeeding.
9. Prolactin:
   • Source: Anterior pituitary.
   • Function: Stimulates milk production in the breasts.
   • Timing: Levels rise during pregnancy but the effects are inhibited by progesterone until after birth.
10. Relaxin:
    • Source: Corpus luteum and the placenta.
    • Function: Relaxes uterine smooth muscle, preventing contractions in early pregnancy. It also plays a role in preparing the cervix and pelvis for childbirth.
    • Timing: Levels rise during pregnancy.

In summary:

• Menstrual cycle: GnRH, LH, FSH, Inhibin, Estrogen, and Progesterone play key roles.
• Pregnancy: HCG, Estrogen, Progesterone, and Relaxin are crucial.
• Birth and postpartum: Oxytocin plays a major role in labor. Prolactin is vital for milk production, and Relaxin helps prepare the pelvis and cervix for childbirth.

This is from the Edzion AI tutor, usually, you would be given a HSC exam-style question after a lesson like this and it will use you answer to check your understanding, thought it might be helpful to share its output. You can check it out on Edzion if you are interested or have any other questions.