Definition of Posteroanterior (PA)

Reviewed on 3/29/2021

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.

QUESTION

What causes tooth decay? See Answer

Health Solutions From Our Sponsors