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Hormones (Hypothalamus (Oxytocin (Synthesized by hypothalamus and stored…

- - - - Acts on anterior pituitary to inhibit FSH
    - - Estradiol-17-beta most active
      - Acts on hypothalmus and reproductive tract
      - Expression of sexual behavior
      - Positive feedback of GnRH
      - Low levels inhibit LH
      - High levels stimulate LH
  - - - Inhibits GnRH from hypothalamus
      - Inhibits reproductive behavior
      - Maintains pregnancy
      - Reduces uterine contractions
  - - - Used by granulosa cells to synthesize estrogen
- - - - Presence: degeneration of paramesonephric ducts
      - Absence (also absence of testosterone and DHT): oviducts, uterus, cranial vagina
  - - - Male duct system
    - - Penis, scrotum, accessory sex glands
- - - - Produced by chorion to promote ovarian production of progesterone
      - LH-like in other species: induces ovulation
    - - Produced by endometrial cups for secondary CL formation