Partial Placenta Previa Anatomy
To better understand placenta previa, it helps to understand the anatomy of the uterus, cervix, and Fallopian tubes.
The placenta is attached to the wall of the uterus. It delivers oxygen and nutrients from the mother's bloodstream to the fetus, during the pregnancy. The normal position of the placenta within the uterus is away from the cervix. If the placenta grows too close to the cervix, placenta previa can result.
Anatomy of the female reproductive tract includes:
- The uterus, cervix, and vaginal canal
- The bladder
- The fallopian tubes:
- The ovaries:
- Female organs during a pelvic examination
The fetus grows within the amniotic sac within the uterus:
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- Crane JM, Van den Hof MC, Dodds L, Armson BA, Liston R. Maternal complications with placenta previa. Am J Perinatol. 2000;17(2):101-5. 
- Sheiner E, Shoham-Vardi I, Hallak M, Hershkowitz R, Katz M, Mazor M. Placenta previa: obstetric risk factors and pregnancy outcome. J Matern Fetal Med. 2001 Dec;10(6):414-9.