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Puberty (10-15 yr Old Onset) Secondary Sex Characteristics and other changes.

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Presentation on theme: "Puberty (10-15 yr Old Onset) Secondary Sex Characteristics and other changes."— Presentation transcript:

1 Puberty (10-15 yr Old Onset) Secondary Sex Characteristics and other changes

2 Female Changes (Secondary Sex Characteristics) Pituitary glands “tell” ovaries to secrete estrogen (female hormone). Causes the following changes: –Fat deposits in breasts –Elaborate duct system in breasts –Pelvis broadens –Skin softer and smoother –Fat deposits in hips, buttocks, thighs –Pubic hair

3 Female cont. Hair under arms develops Vaginal secretions begin Ovulation occurs (egg released monthly) Menstruation begins Estrogen causes bones to stop growing in length Acne

4 Male Changes Pituitary glands “tell” testicles to secrete testosterone (male hormone). Causes the following changes: –Longer heavier bones –Larger muscles –Thicker tougher skin –Deeper voice –More body hair –Pubic hair (Secondary Sex Characteristics)

5 Males cont. Increased metabolism Sperm production begins Genitals develop Some experience baldness later in life Sudden uncontrolled erection of penis Nocturnal emission (wet dreams) Acne Emotional concerns over body changes or lack of changes

6 Male/Female Reproductive System Links Male reproductive system (2 Tabs)Male reproductive system –Hover over organs to get function Female reproductive system and menstrual cycle (3 Tabs)Female reproductive system and menstrual cycle –Hover over organs to get function –Click on Menstrual Cycle tab to watch animation


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