List of Homologues of The Human Reproductive System - Diagram of External Differentiation

Diagram of External Differentiation

  • A: Undifferentiated
  • B: Female
  • C: Male
  • D: Female
  • E: Male
  • F: Female
Prenatal development/mammalian embryogenesis, Development of the urinary and reproductive organs (GA 11.1204, TE E5.6-7)
Common urinary and
reproductive system
  • Mesoderm → Intermediate mesoderm
  • Mesoderm → Lateral plate mesoderm ("LPM")
  • Endoderm → Cloaca → Urogenital sinus ("US")
  • Endoderm+Ectoderm → Cloacal membrane
Urinary system
development
  • Nephrogenic cord → Kidney
  • Nephrotome → Pronephros
  • Mesonephros (Mesonephric tubules)
  • WD → Ureteric bud + Metanephrogenic blastema
  • US → Urinary bladder + Urethra + Primary urethral groove + Urachus
Reproductive system
development
Primarily internal
  • Gonadal ridge → Indifferent gonad → Gonadal cord (Cortical cords, Testis cords)
  • Pronephric duct/Wolffian duct/mesonephric duct + Müllerian duct/paramesonephric ducts (Vaginal plate)
  • US → Prostate or Skene's gland
Primarily external
  • LPM → Genital tubercle → Labioscrotal swelling → Scrotum or Labia majora
  • LPM → Genital tubercle → Primordial phallus → Penis or Clitoris
  • IM → Gubernaculum
  • Peritoneum → Processus vaginalis or Canal of Nuck
Homologues
  • List of homologues of the human reproductive system

M: URI

anat/phys/devp/cell

noco/acba/cong/tumr, sysi/epon, urte

proc/itvp, drug (G4B), blte, urte

M: ♀ FRS

anat/phys/devp

noco/cong/npls, sysi/epon

proc/asst, drug (G1/G2B/G3CD)

M: ♂ MRS

anat/phys/devp

noco/cong/tumr, sysi/epon

proc, drug (G3B/4BE/4C)

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