INFERIOR APERTURE/ OUTLET OF THE THORAX:

INTRODUCTION:

• The inferior aperture is the broad end of the Thorax which surrounds the upper part of the abdominal cavity.
• It is separated from the abdominal cavity by the  musculotendinous partition called as diaphragm.

BOUNDARIES:

Anterior: Infra sternal angle between the two coastal margins.

Posteriorly: Inferior surface of the body of the twelfth thoracic vertebra.

On each side: Costal margin formed by the cartilages of 7th to twelfth ribs.