Lesson 3-9 Review of the Reproductive Systems

Get out Student Journal, Lesson 7 Journal Entry Write a few sentences to describe which dimension is most important or relevant to you in your life right now, and explain why. Bell Ringer

One important part of the physical dimension of sexual health is a person’s reproductive system. Human reproduction is the physical process of producing children. We will focus today on reviewing how the male and female reproductive organs work and what they are. Motivate

Complete Workbook pg. 18 in pencil and see how much you already know – 2 minutes!!! – Compare with a partner when done Look at male reproductive organs slide/handout – correct your answers as needed Penis, testicles, scrotum, epididymis, vas deferens, prostate gland, seminal vesicles, urethra, and Cowper’s glands Male Reproductive System

Spongy tissue, usually soft and limp. When a man becomes sexually excited, the tissue of the penis fills with blood and it becomes larger and firmer (erection). – Happens before sexual intercourse, feeling of sexual attraction, or thoughts about sex. Can happen when a man feels excited or nervous, for no reason at all, or during sleep Penis

About the size and shape of small plums. Make the hormone testosterone and produce sperm (microscopic male reproductive cell). Every day, a healthy male produces several hundred million sperm. Makes sperm best at a few degrees cooler than normal body temperature – This is why they hang outside the body in the scrotum. Testicles

Loose sac of skin that hangs behind the penis. Holds the testicles. If the testicles get cold, the scrotum hugs the body to warm them up to the best temperature for making sperm. If the testicles get too warm, the scrotum hangs low to cool them down. Scrotum

Tightly coiled tube that curves over the top of each testicle. After sperm are made they move into the epididymis for up to 6 weeks. Here they mature and develop the ability to swim. Epididymis

Tube that leads out of the epididymis. 2 of them – one for each testicle – Each is about 17 inches long Mature sperm move from the epididymis into the vas deferens, where they are stored until they leave the body. Unused sperm break down and get absorbed by the body. Vas deferens

Size and shape of a walnut. Makes a thin, milky fluid that helps the sperm move. Grows larger in puberty. Prostate Gland

Pouches that connect to each vas deferens before it reaches the prostate gland. Make a sticky yellow liquid – seminal fluid – that gives sperm energy and helps them move. Together, the fluid from these vesicles and the prostate gland make semen: – the milky white liquid containing sperm that leaves the penis when a man ejaculates. Ejaculation – when the muscles of the reproductive organs contract and push the semen out of the man’s body. Seminal Vesicles

Tube that starts at the bladder and runs through the penis to its end. Carries both urine and semen out of the body, but never at the same time. When a man is sexually excited, a valve closes off the bladder, so urine can’t pass through the urethra. Urethra

2 small glands along the urethra. Make a clear fluid that passes through the urethra before a man ejaculates to flush out any traces of urine. – This fluid is called pre- ejaculate. – Sometimes this fluid can contain sperm that have been left in the urethra from earlier ejaculations. Cowper’s Glands

Complete Workbook pg in pencil and see how much you already know – 2 minutes Compare with a partner when done Can change answers when you find out more information. Female Reproductive Organs

Mons Pubis – area where fat under the skin covers the pubic bone. – Hair grows here during puberty. Labia Majora (outer lips) and Labia Minora (inner lips) – folds of skin that surround and protect the clitoris, vaginal opening, and urinary opening. Clitoris – about the size of a pea and is full of sensitive nerve endings. – Purpose = sexual pleasure Urinary Opening – below or behind the clitoris, where urine leaves the body. Vaginal Opening – below or behind the urinary opening. Where menstrual fluid leaves the body, where the man’s penis enters the body during vaginal sexual intercourse, and where a baby comes out during child birth. Vulva (extrenal)

Muscular tunnel about 4 inches long that goes from the vaginal opening to the opening in the uterus. Provides a way for menstrual fluid to leave the body. Receives man’s penis during sexual intercourse. Passage through which a baby is born. Birth canal Vagina

Pear-shaped organ about the size of a fist. One of the strongest muscles in the body because it has to be able to push a baby out during childbirth. Where a fertilized egg grows and develops into a baby. Puberty starts: menstruation or period: – The uterus builds up a thick lining of blood and tissue approximately once a month to support the growth of a fertilized egg. – When the egg isn’t fertilized, this lining is not needed, so it flows out of the body through the vagina. Uterus

Almond shaped, make female hormones and hold the female’s eggs. When a girl is born, her ovaries contain more than 300,000 unripe egg cells. After puberty, about once a month, an egg ripens in one of the ovaries and is released into the fallopian tube. Ovaries

Come out of each side of the uterus. An egg travels from an ovary through a fallopian tube to get to the uterus. Fertilization happens when a male sperm enters the female egg while it is in the fallopian tube. Fallopian Tubes

End of the uterus that opens into the vagina. During pregnancy, it stays tightly closed to help protect the developing fetus. Cervix

Puberty – have periods Called a cycle because it happens over and over again. One way a girl’s body becomes physically ready to reproduce. 1. egg ripens in ovaries. 2. Uterus begins building up lining (blood/tissue). 3. egg released (ovulation) – 13 to 15 days before next period. 4. Egg travels down fallopian tube into uterus (3-4 days). 5. If fertilized, egg attaches to uterus lining. If not fertilized, uterus will begin to shed lining in another 10 days or so (period). Menstrual Cycle

Puberty anywhere from age 8-14, can then physically reproduce Unintended pregnancies can create physical, social, emotional, and financial hardships for teens and their families. During intercourse the man ejaculates semen into woman’s reproductive system, and some sperm reach fallopian tubes (can live here for up to 5 days). If woman ovulates (releases an egg), sperm can enter the egg (fertilization). The egg then begins to divide and form new cells even on its way to the uterus. Pregnant when the egg attaches to the lining of the uterus. – First 8 weeks – embryo – Then it becomes a fetus – 9 months Pregnancy

When a woman ovulates, a ripe egg is released from an ovary into the fallopian tube. Fertilization can occur when a ripe egg is in the phase where it is traveling toward the uterus in the fallopian tube. If a woman has sex with a man and one of his sperm enters the ripe egg, the egg is fertilized and ready to implant in the lining of the uterus. Woman becomes pregnant once the fertilized egg has attached itself to the lining of her uterus and begins to grow and develop. A woman’s menstrual period stops during pregnancy. Summarize

Can a woman predict when she can get pregnant? – Menstrual cycles aren’t always the same number of days. Makes it hard to predict when a ripe egg will be in the fallopian tube. Especially for teens because their bodies are still maturing and some girls’ periods can be irregular at first. Remember that sperm can like inside the female reproductive system for days. Can be possible for a woman to ovulate after having sex and for the egg to get fertilized. Not healthy/wise for a teen to get pregnant or for a teen to get someone else pregnant!! Ask and Discuss

This class is one place you can get accurate information about sex and sexuality. So you still may have questions about the reproductive system, pregnancy, or other things. You will have a chance to get these questions answered over the next few classes. You can ask your questions anonymously- don’t have to write your name. – Question box – hand out index cards – Write at least 1 question – review the next classes Close