What is the Difference between Breathing and RespirationRespiratory system All living organisms are made up of a number of cells. Each of these cells requires oxygen to break down food and obtain energy. The intake of air rich in oxygen is the first ste…

Mechanism Of Respiratory SystemRespiratory centre is in Medulla Oblongeta. Mechanism of breathing involves Two Phases. (A) Inspiration (B) Expiration Inspiration: Intercostal and phrenic muscles of diaphragm contract to increase thoracic cavity, therefor…

Mammalian Respiratory System The mammalian respiratory system consists of nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles and alveoli. Nostril: It is also called external nares. Nasal Chamber: Nasal septum divides nasal cavity into two nasa…