During the final stages of pregnancy, uterus prepares for the delivery of the baby. The release of hormone oxytocin during labor stimulates the muscle tissue in the uterus, causing vigorous contractions that help push the baby out through the birth canal. This process involves the interaction of which three organ systems? Muscular System
Integumentary System
Skeletal System
Nervous System
Respiratory System
Excretory System
Circulatory System
Reproductive System
Digestive System
Endocrine System ​