USMLE

Luteal Phase

711 views
Reproductive
  1. Follicular Phase
  2. Luteal Phase
  3. Ovulation
  4. Spermatogenesis
  5. Sperm Structure
  6. Testes
  7. Epididymis

Summary

Coming soon...

Key Points

  • Luteal Phase
    • Part of the menstrual cycle from ovulation and formation of corpus luteum through luteolysis (menstruation) or fertilization.
      • Usually lasts ~14 days
    • Starts after ovulation
      • Release of the egg from follicle into fallopian tube
    • Corpus Luteum forms
      • Forms from remainder of the follicle after egg is released
      • Secretes progesterone
        • Maintains uterine lining/wall
    • 2 potential outcomes
      • If pregnancy occurs
        • Implantation and pregnancy proceeds
      • If no pregnancy within 2 weeks (~14 days)
        • Corpus luteum degrades into Corpus Albicans
        • Progesterone stops being secreted
          • Uterine wall sloughs off (menstruation)
    • After menstruation, the follicular phase begins once again