Question

What is meant by breathing describe the mechanism of breathing in humans?

Answer 1

Answer:

exchange of gases is known as breathing

Explanation:

the respiratory system supplies the oxygen needed by body cells and carried off carbon dioxide waste.inhaled air passes via the trachea through narrow tube the bronchi to lungs. dance competition menu fine branching tube call bronchioles the end in time trailer called alveoli. justice cross the thin alveolar walls to and from a network of tiny blood vessels.

Answer 2

Answer:

the process of taking air into and expelling it from the lungs is called breathing. The action of breathing in and out is due to changes of pressure within the thorax, in comparison with the outside. ... When we inhale the intercostal muscles (between the ribs) and diaphragm contract to expand the chest cavity