Question

step by step how respiratory system works in human body ....(5marks)

Answer 1

The primary organs of the respiratory system are the lungs, which function to take in oxygen and expel carbon dioxide as we breathe. The gas exchange process is performed by thelungs and respiratory system. Air, a mix of oxygen and other gases, is inhaled. In the throat, the trachea, or windpipe, filters the air

Answer 2

Alveoli: Tiny air-filled sacs in the lungs where the exchange of oxygen and carbon dioxide occurs between the lungs and the bloodstream.

Bronchi: Two main branches of the trachea leading into the lungs.

 

Bronchial tree: Branching, air-conducting subdivisions of the bronchi in the lungs.

Diaphragm: Dome-shaped sheet of muscle located below the lungs separating the thoracic and abdominal cavities that contracts and expands to force air in and out of the lungs.

Epiglottis: Flap of elastic cartilage covering the larynx that allows air to pass through the trachea while keeping solid particles and liquids out.

Pleura: Membranous sac that envelops each lung and lines the thoracic cavity.