KINESIOL 1A03 Lecture Notes - Lecture 3: Paramesonephric Duct, Mesonephric Duct, Vas Deferens
14 Sep 2016
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Document Summary
Undifferentiated before the primordial germ cells reach (undefined male or female) Around 35 days, formed by mass of mesoderm cells on the anterior side of mesonephros. In 21 days, forming in yolk sac region, Will later form gametes (oocytes or sperm cells) Migrate from yolk sac to gonadal ridge (become a male or female) Will the come together join the urinary system to sperm can exist from male urethrae. Mullerian-inhibiting hormone: secreted by testes causes the paramesonephric ducts to degrade ( differentiate into the female anatomy) *two hormones are need to develop male productive system, if no hormones released, it will automatically turn into female productive system. External forming around 30 days signal differentiate from undifferentiated stage. Male side tubercle become penis urethral groove fuse around to form body of penis. Female side tubercle become smaller groove become minora fold become majora. Blood bypasses the lungs no air (o2) in the lungs, don"t need to pick up.
