chest - choose a jigsaw puzzle to solve

The thorax or chest (from the Greek θώραξ thorax "breastplate, cuirass, corslet" via Latin : thorax ) is a part of the anatomy of humans and various other animals located between the neck and the abdomen . The thorax includes the thoracic cavity and the thoracic wall . It contains organs including the heart , lungs, and thymus gland, as well as muscles and various other internal structures. Many diseases may affect the chest, and one of the most common symptoms is chest pain.