Ultrasound: Nuchal Translucency

Hormone Cycle H

or m

on e

Le ve

ls

Days

0 14 28

Estro gen

Progesterone

LH

FSH

Follicular Phase: Day 0 – 14

Luteal Phase: Day 14 – 28

Ovulatory Cycle

Days

0 14 28

Follicle growth/ Maturation due to

FSH

Ovulation: Egg released due to

LH

Formation of Corpus Luteum

Menstrual Cycle

0 14 28

Ovum

Menstruation Uterine lining shed

Days 1-5

U te

ri ne

L in

in g

Ch an

ge s

7

Proliferative Phase Uterine lining re-builds

Days 5-13

Ovulation Egg released

Day 14 Secretory Phase

Chemicals secreted to help fertilized egg develop

OR Helps lining break down &

shed if no egg was fertilized Days 14-28

Pituitary Gland Hormones

Ovarian Hormones

https://www.ucsfhealth.org/education/the-menstrual-cycle

https://www.ncbi.nlm.nih.gov/books/NBK279054/

REFERENCES