Ch. 20.3 The reproductive system allows the production of offspring..

Vocabulary: menstruation, fertilization, embryo, fetus

Review:
1. male: makes sperm cells; female: makes egg cells; nourishes offspring until birth
2. Hormone stimulates eggs in ovary to develop. Hormone signals egg to move through fallopian tube to uterus.
3. Embryo is ball of cells; fetus has beginnings of features, organs, and skeleton.
4. Fertilized egg moves down fallopian tube; it divides and continues as a ball of cells; forms an embryo; embryo implants in uterus.
5. signal cells in testes to develop into sperm; signal ovaries to release eggs
6. Hormones from endocrine system signal sexual development. In females, hormones make egg develop and make ovary release it.