TIM: Mmm, I don’t think I've hit my growth spurt yet, Moby. Moby is holding a length of measuring tape up to Tim. TIM: And the larynx enlarges, making your voice a lot deeper.Īn animation shows Tim and Moby in a room. TIM: The genital organs start to enlarge.Īn animation shows a shirtless boy (Tim) from the chest up, standing in front of a blue tiled wall. TIM: Facial and body hair starts growing, too.Īn image shows short hairs around a mouth. Just like in girls, pubic and underarm hair starts to grow. TIM: The increased level of testosterone causes changes in boys, too. A dotted circle appears around the lower half of his body, surrounding the green dots. A small green dot appears about where his mouth would be and two small green dots appear just above and between his legs. TIM: In boys between 9 and 14 years old, hormones from the pituitary gland tell the testes to let out more of the hormone testosterone, and to start making sperm.Īn animation shows a male shadow. An image shows a tampon and a feminine hygiene pad. An image shows the lower torso, hips, and upper legs of a clothed girl. Breasts start to develop, hips gain some extra padding, pubic and underarm hair starts to grow, and menstruation begins.Īn image shows the chest of a clothed girl. TIM: These hormones cause changes to happen in a girl's body. A dotted circle appears around the lower half of her body, surrounding the green dots.Īt the top right of the screen, text reads: estrogen. A small green dot appears about where her mouth would be and two small green dots appear just above and between her legs. The pituitary gland releases hormones that tell the ovaries to start producing the hormones estrogen and progesterone, and to start releasing eggs each month.Īn animation shows a female shadow. TIM: Puberty begins in girls between ages 8 and 13. Two small blue dots appear just above and between the legs of each shadow. TIM: The reproductive glands–the testes in boys, and the ovaries in girls–also manufacture hormones that contribute to puberty. A small blue dot appears about where the mouth would be on each shadow. Hormones are the chemical messengers released by the pituitary gland, a tiny but important pea-sized structure located near your brain.Īn animation shows a male shadow and a female shadow Text reads: hormones. It's caused by hormonal changes in your body. TIM: Well, simply put, puberty is the name for all the changes your body goes through as it makes the transition from childhood to adulthood. TIM: But we do hit puberty later than girls. Tim is wearing a white T-shirt with a red uppercase letter “P” on it. TIM: Dear Tim and Moby, Why are boys so immature? Signed, Jewels. An animation shows Tim’s hand holding a typed letter. He’s holding an envelope.Ī boy, Tim, appears in the room. Text reads: The Mysteries of Life with Tim and Moby.Īn animation shows a hand flying a toy airplane around a room.
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