ANT-2301 Lecture Notes - Genital Tubercle, Labioscrotal Swelling, Fallopian Tube
Document Summary
Primary sexual characteristics: genitals (sex organs) 5-7 days after fertilizations, blastula attaches to wall of uterus and forms the umbilical cord. Embryo"s growth centers around an axis- becomes spine and spinal cord. Brain, spinal cord, heart, and gastrointestinal tract begin to form: week 4-5. Tissue formation occurs that develops into the vertebrae and some bones. Heart starts to beat and blood starts to flow: week 6-8. Toxic exposures often cause physiological abnormalities or. Ultrasounds have shown male fetuses w/ erections in th uterus and shortly after birth. Female babies capable of vaginal lubrication from birth. Both sexes produce very small amounts of estrogen and testosterone from birth. Child development: early childhood (2-5 years) Begin exploration of their bodies: during potty training. Might engage in sex play (don"t know what it is) Sex organs grow in size along w/ rest of the body: overt sexual behavior becomes more private.
