Hormones - Gametes of the sexes Females Eggs Develop in the Ovaries All the gametes an individual will ever produce are already present at birth

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Gametes… of the sexes Females Eggs Develop in the Ovaries All the gametes an individual will ever produce are already present at birth and are stored as undeveloped follicles Males Sperm is produced in the male scrotum Male gametes arise from undifferentiated stem cells that continually divide and regenerate over the male’s lifetime
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Two Types of Feedback Positive Feedback Negative Feedback Organ or Gland Organ or Gland Releases a substance to act on a system Releases a substance to act on a system System Acted Upon System Acted Upon Releases a secondary substance which acts on the gland or organ Releases a secondary substance which acts on the gland or organ Inhibits (stops) further release of the original substance Promotes or encourages more of the original substance to be released
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Three Primary Hormones of Sexual Development Estrogen Progesterone Testosterone 0 20 40 60 80 100 120 140 Men Women E P T
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Estrogen’s Effects on Female Sexual Development
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This note was uploaded on 11/07/2011 for the course BIOLOGY 100 taught by Professor Staff during the Winter '08 term at BYU.

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Hormones - Gametes of the sexes Females Eggs Develop in the Ovaries All the gametes an individual will ever produce are already present at birth

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