Find out the structures that forms the thoracic chamber from the following.

a) Ventrally by the sternum

b) Dorsally by the sternum

c) Dorsally by the vertebral column

d) Ventrally by the vertebral column

e) Laterally by the ribs

f) Lower side by the dome-shaped diaphragm

g) Upper side by the dome-shaped diaphragm

The lungs are situated in the thoracic chamber which is anatomically an air-tight chamber. The thoracic chamber is formed dorsally by the vertebral column, ventrally by the sternum, laterally by the ribs and on
the lower side by the dome-shaped diaphragm. The anatomical setup of lungs in thorax is such that any change in the volume of the thoracic cavity will be reflected in the lung (pulmonary) cavity. Such an arrangement is essential for breathing, as we cannot directly alter the pulmonary volume.