Question

:) The lateral walls of the chest cavity of man are composed of the:
(A) ribs
3 (B) intercostals muscles
(C) ribs and intercostals muscles
(D) ribs, intercostals muscles and diaphragm​

Answer 1

The lateral walls of the chest cavity of man are composed of the :

--- ribs and intercostal muscles.

Because:

• lungs are situated in the thoracic cavity(chest cavity).
• our thoracic cavity arrangement is in such a way that any change in its volume or pressure will affect the pulmonary pressure, by which it further essential for inward and outward movement of air from the lungs.
• Its is dorsally surrounded of vertebral column, ventrally by sternum,laterally by the ribs.
• In between the ribs, external and internal intercoastal muscles which help in the passive and active breathing.
• And lower side has dome-shaped diaphragm.

☆So right option is (C).

------------

Answer 2

Explanation:

The lateral walls of the chest cavity of man are composed of the :

--- ribs and intercostal muscles.

Because:

lungs are situated in the thoracic cavity(chest cavity).

our thoracic cavity arrangement is in such a way that any change in its volume or pressure will affect the pulmonary pressure, by which it further essential for inward and outward movement of air from the lungs.

Its is dorsally surrounded of vertebral column, ventrally by sternum,laterally by the ribs.

In between the ribs, external and internal intercoastal muscles which help in the passive and active breathing.

And lower side has dome-shaped diaphragm.

☆So right option is (C).

------------