Which hormones most directly influence the uterus during pregnancy?

The main hormones that directly affect the uterus during pregnancy include:

1. Progesterone: Maintains the uterine lining and prevents premature contractions.

2. Estrogen: Promotes the growth of the uterine lining and increases blood flow to it.

3. Cortico gonadotropin (hCG): Supports progesterone secretion in the early stages of pregnancy.

4. Relaxin: It contributes to softening the pelvic ligaments and expanding the cervix in preparation for childbirth.

5. Oxytocin: Stimulates uterine contractions during labor.