| A | B |
|---|
| Testes | Are the male gonads |
| Semineferous tubules | Sperm is produced in the |
| Epididymis | Sperm is stored in the |
| Vas deferens | Sperm then leaves the epididymis through the |
| Urethra | Is a tube inside the penis in which semen leaves the body |
| Internal fertilization | The penis is a structural adaptation for |
| Testosterone | The testes produce a male sex hormone called |
| Scrotum | Keeps the temperature of the testes 1-2 degrees Celsius cooler which provides an optimum temperature |
| Ovaries | The female gonads |
| Follicle | In the ovaries, each egg cell (ovum) is present in a tiny sac called a |
| Ovulation | About once a month, a follicle matures and bursts. The egg is then released and travels into the oviduct (Fallopian tubules) |
| Fertilization | Takes place within the Fallopian tubules (oviduct) forming a zygote |
| Estrogen | Used for the development of secondary sex characteristics like mammary glands (breasts) |
| Progesterone | A hormone that maintains pregnancy |
| Placenta | Provides for nutrition, respiration and excretion for the developing embryo |
| Umbilical cord | Attaches the embryo to the placenta |
| Amniotic sac | The embryo develops inside a "bubble-like" structure called the |
| Amniotic fluid | Serves as a shock absorber for the developing embryo |
| Gestation Period | The length of pregnancy |
| Identical twins | Develops from one zygote separating into two during cleavage. One sperm and one egg is involved and therefore the babies will look identical and must be of same sex |
| Fraternal twins | Develops from two eggs, each fertilized by separate sperm cells. Therefore, the babies may not look identical and could be of different sex |
| Follicle Stage | FSH is secreted by the pituitary gland which stimulates maturation of egg in the follicle |
| Ovulation | Secretion of LH (lutenizing hormone) from the pituitary causes a mature egg to be released from the follicle and into the fallopian tubules (oviduct) |
| Corpus Luteum Stage | The burst follicle fills with cells forming the corpus luteum, which produces progesterone |
| Menstruation | If the egg is not fertilized, progesterone secretion decreases and the lining of the uterus breaks down |
| In Vitro Fertilization | The fertilization of an embryo outside of the mother in a laboratory setting |
| Fallopian Tubules | Fertilization occurs in the |
