Puberty Junior Health

Do Now Daily Recording Calendar List two things you like about yourself List two things you do routinely that you feel good about List two tasks that are difficult for you to do but you are able to accomplish

Self-Concept Self Concept: What you think of yourself, physically and mentally Will change during adolescence and continue to develop into adulthood Body Image: The way you see your physical self Three factors that affect your self-concept are body image, emotions, and sexual feelings

http://www.youtube.com/watch?v=L3D0jMIOK_c

Secondary Sex Characteristics Voice Deepens Muscle strength increases Pubic hair appears Skin releases more oils Perspiration increases Shoulders broaden Hair appears on face and chest Breasts Develop Hips widen Body fat increases

Puberty Period of sexual development when a person becomes sexually mature and able to reproduce Begins before you reach adolescence and ends during mid-adolescence Girls 10-17 Boys 11-15 Ovulation & Sperm production

Fertilization A sperm cell joins with an egg cell Gamete + Gamete = Zygote Sperm = male reproductive cells Egg = female reproductive cells Embryo = Early stage of pregnancy (sesame seed) Fetus = Human embryo at week 9

Fertilization Fertilization If the Egg Isn't Fertilized If one sperm does make its way into the Fallopian tube and burrow into the egg, it fertilizes the egg. The egg changes so that no other sperm can get in.  At the instant of fertilization, your baby's genes and sex are set. If the sperm has a Y chromosome, your baby will be a boy. If it has an X chromosome, the baby will be a girl. If the Egg Isn't Fertilized If no sperm is around to fertilize the egg, it moves through the uterus and disintegrates. Your hormone levels go back to normal. Your body sheds the thick lining of the uterus, and your period starts.

Hormones Male Sex Hormones- Female Sex Hormones- Testosterone produced in testes -affects the production of sperm and signals certain physical changes at puberty, such as the growth of facial hair Female Sex Hormones- Estrogen & progesterone produced by ovaries Estrogen- activates certain physical changes at puberty, controls the maturation of eggs Progesterone- activates changes to a woman’s reproductive system before and during pregnancy

Endocrine Gland: Female A brain structure called the hypothalamus causes the nearby pituitary gland to produce certain chemicals, which prompt the ovaries to produce the sex hormones estrogen and progesterone. Prompted by the hypothalamus, the pituitary gland releases follicle stimulating hormone (FSH) during ovulation

Endocrine Gland: Male Hypothalamus signals the pituitary gland to release two hormones- Luteinizing hormone (LH) and follicle- stimulating hormone (FSH) LH triggers testes to begin making testosterone Testosterone and FSH then trigger the production of sperm

Puberty: Role Playing Students will chose an event that occurs to an male or female during puberty. Students will work together to develop skits that accurately depict the situation and role play the skit in front of the class. Examples of situations: What it feels like when a girl gets her period for the first time How a boy feels when he his voice cracks when he's delivering a talk at school How it feels to have a bad facial blemish right before going to a big social event What it feels like as awareness of the opposite sex increases How a girl feels when she can't go to a swim party because she has her period How the smallest boy in the class feels as he watches his peers shoot up

Rubric Each group will be graded by a rubric based on the following: Three points: showed strong research skills- all information completely accurate; answered all the questions correctly; showed maturity and insight into the topic while working with a group in preparing and presenting a skit; participated actively in class discussions. Two points: showed on-grade research skills- some information is accurate; answered most of the questions correctly; worked well with a group while preparing and presenting a skit; was somewhat engaged in class discussions. One point: showed below grade level research skills- information is not accurate; answered two questions correctly; had trouble working with a group while preparing and presenting a skit; was not engaged in class discussions.

Discussion Questions 1. What do you think is the single hardest thing about going through puberty? What is the greatest benefit of reaching physical adulthood? 2. What is the relationship between hormones and changes taking place in your body? 3. Describe one fact that you learned about the experience of puberty in the opposite sex. Do you have a greater appreciation now of what members of the opposite sex are experiencing?