Male Growth & Development

Female Growth & Development

Testes & Scrotum Development
· Testes and scrotum begin to get bigger.
· Body begins producing testosterone and developing sperm.
· Pubic hair begins to appear.

Rapid Growth Spurt
· The pituitary gland triggers growth spurt, sending signals for ovaries to start producing estrogen.
· Clumsiness may occur due to growth spurt.

Rapid Growth Spurt
· The rate of growth usually doubles.
· The length of arms and legs also lengthens at a faster rate than trunk and torso causing clumsiness.
· Penis begins to grow.

Breast Development
· Breast development lasts from three to five years.
· Nipples swell first, causing tenderness and sensitivity.
· There may be a secretion from nipples, and one breast may develop quicker than the other.

Underarm/Facial Hair
· Facial and underarm hair tend to grow following pubic hair.

Hip Development/Pubic Hair
· Hips begin to fill out, while body becomes more curved and rounded.
· Pubic hair begin to grow.

Swelling of Breasts
· Once testosterone within body becomes more balanced, the swelling and tenderness around the breast area begins to lessen.

Oil/Sweat Glands
· New sweat glands start to work, producing more perspiration and creating body odor.
· Imbalance of testosterone creates oil buildups in skin, causing pimples on face, neck, chest and back.

Oil/Sweat Glands
· New sweat glands start to work, producing more perspiration and creating body odor.
· Imbalance of testosterone creates oil buildups in skin, causing pimples on face, neck, chest and back.

Menstruation
· Girls begin to ovulate, releasing an egg on a monthly basis.

Additional Changes: Voice changes, nocturnal (night) emissions, uncontrollable erections and wide swings of emotion.

Additional Changes: voice changes, wide swings of emotion, poor body image.