Presentation on theme: "Reproductive System Bradley Aga & Alyscia Sanderson Period 5 Anatomy."— Presentation transcript:
Reproductive System Bradley Aga & Alyscia Sanderson Period 5 Anatomy
Reproductive System also know as genital system system of organs within an organism which work together for the purpose of reproduction fluids, hormones, and pheromones are important accessories to the system the sexes of different species often have significant differences, unlike most organ systems major external genitalia- penis and vulva major internal genitalia- testicles and ovaries communicable sexually transmitted diseases.
Interesting facts about Reproductive System The largest cell in the female body is the egg. A woman never runs out of eggs. At birth she has between 1 and 2 million potential eggs and by puberty has 300,000 to 400,000 viable eggs that can be fertilized. About 500 million sperm mature every day in a healthy male. The male scrotum hangs outside the body since the internal body temperature is too high and will kill the sperm. The average lifespan of an egg once it is released from the ovary is 12-24 hours after which it either disintegrates or is flushed out of the body with the menstrual flow. The average life span of the sperm is 2-3 days. The male reproductive system produces millions of sperm to transmit them to the female body to fertilize one egg. Once the sperm has penetrated the egg the outer shell becomes impenetrable to other sperm.
In the uterus, prior to birth, the babys body is covered by a thin layer of hair. As soon as the baby is born that hair soon disappears. The hair is called lanugo. Babies are sometimes born with several teeth called milk teeth that soon fall out after the baby is born. Female babies can actually bleed vaginally for several days after birth in response to the removal of the mothers hormones during pregnancy. When a baby is born, both male and female, the mammary glands are sometimes so stimulated by the mothers hormones that they give tiny drops of milk for about a week.
LAB The average women is ready to give birth when fully dilated at 10 cm. Some women cannot dilate past 4 cm so the have to get a caesarean section. Some women can open up to about 25 cm, which makes for a very fast labor, but this is not very common. Who is ready to give birth??? We are going to take a grapefruit and you are going to try and get it through the ring holder. Be gentle with the grapefruit because it represents the head of a newborn baby. Try not to squeeze it too hard, we dont want any juices coming out of the babys head.