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  2. Puberty - Wikipedia

    en.wikipedia.org/wiki/Puberty

    During puberty, a male's erect penis becomes capable of ejaculating semen and impregnating a female. [26] [27] A male's first ejaculation is an important milestone in his development. [28] On average, a male's first ejaculation occurs at age 13. [29] Ejaculation sometimes occurs during sleep; this phenomenon is known as a nocturnal emission. [25]

  3. Prenatal hormones and sexual orientation - Wikipedia

    en.wikipedia.org/wiki/Prenatal_hormones_and...

    In a female, on the other hand, absence of these levels of androgens results in development of typically female genitals. [4] Following this, sexual differentiation of the brain occurs; sex hormones exert organizational effects on the brain that will be activated in puberty. [4]

  4. Prenatal testosterone transfer - Wikipedia

    en.wikipedia.org/wiki/Prenatal_testosterone_transfer

    Most animal studies are performed on rats or mice. In these studies, the amount of testosterone each individual fetus is exposed to depends on its intrauterine position (IUP). Each gestating fetus not at either end of the uterine horn is surrounded by either two males (2M), two females (0M), or one female and one male (1M).

  5. When male puberty hits, parents need to be prepared - AOL

    www.aol.com/care-more-son-health-urologist...

    Parents need to talk with their sons about puberty changes before voices crack and new body hair appears. Doing so will help them have healthier, happier lives. When male puberty hits, parents ...

  6. Sexual differentiation - Wikipedia

    en.wikipedia.org/wiki/Sexual_differentiation

    Sexual differentiation is the process of development of the sex differences between males and females from an undifferentiated zygote. [1] [2] Sex determination is often distinct from sex differentiation; sex determination is the designation for the development stage towards either male or female, while sex differentiation is the pathway towards the development of the phenotype.

  7. Sexual differentiation in humans - Wikipedia

    en.wikipedia.org/wiki/Sexual_differentiation_in...

    The embryo and subsequent early fetus appear to be sexually indifferent, looking neither like a male or a female. Over the next several weeks, hormones are produced that cause undifferentiated tissue to transform into either male or female reproductive organs. This process is called sexual differentiation.

  8. Young mother facing permanent health problems after gender ...

    www.aol.com/news/young-mother-facing-permanent...

    After suffering a painful pregnancy as a result of the bodily changes resulting from taking puberty blockers, Mosley gave birth to a healthy baby boy six months ago.

  9. Maternal physiological changes in pregnancy - Wikipedia

    en.wikipedia.org/wiki/Maternal_physiological...

    Genitourinary Changes in Pregnancy. Progesterone causes many changes to the genitourinary system. A pregnant woman may experience an increase in the size of the kidneys and ureter due to the increase blood volume and vasculature. Later in pregnancy, the woman might develop physiological hydronephrosis and hydroureter, which are normal. [33]