Question

What are the functions of ribs ,sternum and diaphram in.breathing?

Answer 1

Answer:

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Explanation:

Diaphragm: Expands downwards into the abdominal cavity to allow for the lungs to expand as we inhale. As the diaphragm contracts the air is expelled from the lungs. 

Ribs: The ribs protect the lungs and expand as you inhale to fascillitate space for the lungs to expand like the diaphragm. The ribs then contract expelling the air in the lungs. 

Altogether now: The diaphragm relaxes and expands downward into the abdominal cavity as the ribs relax to also expand for an increase in air space for the lungs to take in O2. The ribs and diaphragm then contract to expel the CO2 and waste products from the de-oxygenated gases as you exhale.

Sterum: The sterum protects the vital area right above your heart and lungs.It completes the rib cage, since the  first to the seventh rib is connected to it by coastal cartilage.It is the insertion point of ribs and upper limbs