2 Functions Help regulate and coordinate body systems Hormones chemical messages manufactured in glands throughout bodyEndocrine glands release hormones directly into the blood because they are ductlessNegative feedback system endocrine system gives itself messages to control the production and release of hormones
4 Endocrine system hormones are key factors in the function of human reproduction
5 Male Reproductive System Internal and external organsTestes organs that produce male hormone testosterone and reproductive cells spermSperm combined with fluid energy source, producing semen.
6 Female Reproductive System Internal organs called ovaries produce eggsOnce a month, ovulation releases eggUterus hollow, pear shaped, muscular organ that opens to outside of bodyVagina the birth canal, or a muscular tube that opens to outside of body
7 Menstrual Cycle Monthly cycle of changes in female reproductive system Endocrine hormones estrogen and progesterone control itMenstruation release of blood and uterine lining tissueMenopause gradual shutdown of ovaries which ends ovulation and periods
8 Human Development Fertilization uniting of sperm and egg Zygote fertilized cell formed by nucleus of sperm and eggPregnancy period of development before birthZygote moves to uterus and becomes embryoUmbilical cord connects embryo to placenta, providing nutrients from mother and removing wastes from babyEmbryo called fetus after two months of development
9 Birthing ProcessMuscular contractions of uterus push baby out through vaginaUmbilical cord cut after baby born, and scar forms the naval (belly button)If baby cannot be delivered from birth canal, they are delivered by cesarean section