Selected Reproductive Terms1. Breast2. Vagina 3. Uterus 4. Ovaries5. Estrogen 6. Progesterone 7. Ovulation 8. Menstruation 9. Egg/Ovum10.Pubic hair 11.Puberty12.Hormones

13.Testes 14.Penis15.Scrotum 16.Testosterone 17.Sperm18.Erection 19.Ejaculation 20.Semen 21.Nocturnal emission22.Vas deferens 23.Fertilization 24.Gametes

New Terms• Puberty: is the time when you

start to develop the physical characteristics of adults of your gender.

• Adolescence: is the time of life between childhood and adulthood.

• Hormones: chemical substances produced in your body’s glands.

…and your body changes…

Rapid growth

Shoulders get

broader

Larynx gets larger

and voice deepens

Facial hair

appears

Muscles develop

Underarm hair appearsPubic hair appearsPerspiration increasesAcne appearsExternal genitals enlargementSperm production starts

…and your body changes…

Rapid growthBreast developmentHips get widerWaistline gets narrowerUnderarm hair appearPerspiration increases

Pubic hair appearAcne appearsExternal genitals enlargesUterus and ovaries enlargeOvulation occursMenstruation starts

Major Physical Changes in Females

Breasts: • Breast development starts with small,

tender lumps under one or both nipples that will get bigger over the next few years.

Hair: • Soft hair will start to grow in the pubic

area. This hair will eventually become thick and very curly. Underarm and legs also grow hair.

Body shape: • Hips get wider and waist will get smaller.

Body will also begin to build up fat in the stomach, buttocks, and legs. This gives the body the curvier shape of a woman.

Major Physical Changes in Females

Menstruation: • Most girls get their periods between

ages9 and 16. During puberty, the ovaries begin to release eggs. If an egg is fertilized by sperm, it will grow inside the uterus and develop into a baby.

• To prepare for this, a thick layer of tissue and blood cells builds up on the wall of the uterus. If the egg is not fertilized, these tissues and cells are not needed by the body. They turn into a blood-like fluid and flow out of the vagina along with the egg.

Menstruation • The menstrual period is the monthly discharge

of fluid (blood & tissues) out of the body. • When a girl first begins to have her period, she

is able to get pregnant. • During your period, you will need to wear

sanitary pad and/or tampon to absorb this fluid. • Most periods last from 3 to 6 days. • Some common symptoms of menstruation

include:– cramps – bloating – soreness or swelling in your breasts – headaches – sudden mood changes, such as sadness or

irritability & depression

Using a Tampon

Major Body Changes in Males

Body shape: • During this rapid growth period, a boy gets

taller , shoulders will get broader, and gains a lot of weight. Many boys may experience swelling under their nipples.

• During puberty, muscles will also get bigger.

Voice: • Voice will get deeper. This may start with

voice cracking. As growth continues, the cracking will stop and voice will stay at the lower range.

Major Body Changes in Males

Hair: • Hair will appear under arms, legs,

and above the penis. Chest hair may appear during puberty or years after, although not all men have chest hair.

Major Body Changes in Males

Penis: • Penis and testes will get larger. Boys may

have erections more often due to an increase in sex hormones.

• Sperm production starts during puberty. So, during an erection, boys may also experience ejaculation. This occurs when semen is released through the penis. This could happen during sleep.

• Ejaculation during sleep is called a “nocturnal emission” or "wet dream." This is normal and will stop as boys get older.

Gradual Growth of Pubic Hair in Females

Breast Development in Females

Stages of puberty in Males

Gradual change of male genitals during puberty

Childhood to Adulthood