Slideshows Images Quizzes

Copyright © 2018 by RxList Inc. RxList does not provide medical advice, diagnosis or treatment. See additional information.

Definition of Posteroanterior (PA)

Posteroanterior (PA): In anatomy, posteroanterior (PA) means from back-to-front. For example, a PA X-ray of the chest is taken from back-to-front.

PA in this respect is the opposite of AP, which stands for anteroposterior: from front-to-back.

SLIDESHOW

Heart Disease: Causes of a Heart Attack See Slideshow
Reviewed on 12/27/2018
CONTINUE SCROLLING FOR RELATED SLIDESHOW

Health Solutions From Our Sponsors