Reproduction Unit
Reproduction in General = stage of sexual development in which males and females become physically able to produce babies. Females = between the ages of Secondary Sex Characteristics = physical changes that occur during puberty. Puberty 8 & 13 - Males = between the ages of 12 & 16 •_____________________ = stage of sexual development in which males and females become _______________ able to produce babies. ·Females = between the ages of _______ and __________. ·Males = between the ages of ________ and ___________. •Secondary Sex Characteristics (__________) = physical changes that occur during puberty. (SSC)
Female Reproduction Female SSC 1. underarm hair 2. pubic hair 3. Wider hips 4. Larger breasts
Reproduction in General Pituitary = pea-sized endocrine gland located at the base of the brain. It secretes hormones. = chemical messengers produced by the endocrine glands. They produce body changes. Hormones
Female Hormones =causes reproductive organs and SSC to mature at puberty. = helps to prepare a female’s body to maintain a developing baby. Estrogen Progesterone
Female Reproductive Organs = Female reproductive glands. Females have 2 ovaries, one on each side of the body at hip level. They are the size of an =Egg, sex cell produced by the ovaries. =Serve as passageway for ova to move from each ovary to the uterus. They are 3 to 5 inches long. Ovaries almond Ova Fallopian tubes
Female Reproductive Organs (Continued) Uterus = hollow, pear shaped organ. It is also called the womb. It is the size of a fist . = small opening at the lower end of the uterus. It is the size of the opening of a straw. = the name of the birth canal. Cervix Vagina
Female Reproduction (Continued) = the release of an ovum(egg) from the ovaries. Ovulation
Female Reproduction (Continued) Each month the lining of the begins to thicken. This change prepares the uterus to receive a ovum(egg). = If the uterus does not receive a fertilized ovum (egg), the tissue breaks down and is passed out of the body through the vagina. uterus fertilized Menstruation
Male Reproductive System are the male reproductive glands. Males have 2 of these glands. = is produced by the testes. Also known as the male sex cells. Testes Sperm
Male Hormone Testosterone = produced by the testes. It is responsible for the male secondary sex characteristics (SSC).
Male Secondary Sex Characteristics (SSC) List the 4 male secondary sex characteristics. 1. Underarm and pubic hair. 2. Facial hair. 3. Deepening voice. 4. Broadened shoulders.
Male Reproductive Organs (continued) Vas deferens = the tubes which connect the testes with the seminal vesicles. = secrete (release) a sugary fluid that nourishes the sperm. = secretes a thin, milky fluid which keeps the sperm alive and active. Seminal vesicles Prostate
Male Reproduction (continued) = a mixture of the fluids produced by the seminal vesicles and prostate gland and sperm. = the tube through which semen exits the body. Semen Urethra
Male Reproduction (continued) = saclike pouch that holds the testes. It helps control the temperature of the testes. = layer of skin at the tip of the penis. = surgical removal of the foreskin. Scrotum Foreskin Circumcision
Human Reproduction At one time you were no larger than a tiny You were a single cell. = the union of the male sperm cell and the female ovum (egg). Dot. (.) Fertilization
Fun…
Twins Fraternal twins = 2 ovum(eggs) are released. Each baby has their own placenta and amniotic sac. = 1 ovum(eggs) is released. The egg divides and splits. The babies are within the same amniotic sac, but each has their own placenta. Identical twins
Human Reproduction Placenta = the round, flat, organ filled with blood vessels that is connected to the embryo (baby) by an The mother’s and baby’s blood vessels are close to each other in the umbilical cord. Food, oxygen, and waste materials pass back and forth from the mom to the baby. Umbilical cord
Human Reproduction Prenatal = the care of the mom and baby before birth (while the mom is pregnant). = the name of the doctor who specializes in pregnancy care and the delivery of a baby. Obstetrician
3 Stages of Labor (can take between 12-15 hours 3 Stages of Labor (can take between 12-15 hours. Could take up to 24 hours.) Stage 1 = Begins with contractions of the muscles in the . The amniotic sac (fluid filled sac around the baby) breaks. “Water Broke” The stage ends when the baby’s head enters the vagina can take several hours) Stage 2 =Contractions push the baby through the birth canal. The Dr. ties the and cuts it close to the baby’s body (in approximately 2 weeks the stub dries and falls off, creating the belly button. uterus Umbilical cord
3 Stages of Labor (Continued) uterus Stage 3 = The muscles in the contract and push the rest of the umbilical cord and through the birth canal. This ends labor, the contractions stop and the slowly returns to its normal size. Placenta uterus