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BS 1 45.5 +46.4 (45.5: Invertebrate regulatory systems also involve…

- - - - growth and budding
  - - - brain hormone
        
        releases ecdysone
        
        juvenile hormone
- - - - 4 mature products at once
      - sperm can divide by mitosis throughout the male's life
      - uninterrupted sequence
    - - long "resting" periods
      - can't continue to divide by mitosis
      - 1 mature single daughter cell during meiosis
  - - - menstrual (primates)
        
        endometrium sheds from uterus through cervix and vagina
        
        menstration
        
        can have intercourse at any time
      - estrous
        
        stronger effects of season and climate
        
        can only do sexual activity during a small window
        
        estrus (aka heat)
    - - ovarian cycle
        
        organs involved: uterus + ovaries
      - Hormones released
        
        GnRH (hypothalamus)
        
        FSH + LH (Anterior Pit)
        
        control production of steroid hormones in ovaries
        
        progesterone
        
        estrogen