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…

Respiration In Plants By young roots: Air occurs in soil interspaces. Root hairs as well as epiblema cells of the young roots are in contact with them. They are also permeable to metabolic gases. Oxygen of the soil air diffuses through root hair-epiblema…

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…

What are the Characteristics of Living ThingsCharacteristics of living things The characteristics of living things are described below.Structural Organization Living things have a definite structural organization. Their bodies are made of cells, which ar…