Mechanism Of Respiratory System Respiratory 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, therefore outside rushes inside. Expiration: Intercostal & phrenic relex muscles. Due to decrease of thoracic cavity air … [Read more...] about Mechanism Of Respiratory System
Respiration
Respiration In Plants
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 cells and reaches all internal cells of the young root. Carbon dioxide produced by root cells diffuses in the opposite … [Read more...] about Respiration In Plants
Mammalian Respiratory System
Mammalian Respiratory SystemThe 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 nasal chamber by the nasal septum. Internal nares: There are posterior opening of nasal chambers that leads into … [Read more...] about Mammalian Respiratory System
What are the Characteristics of Living Things
What are the Characteristics of Living Things Characteristics 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 are the building blocks of the body.A cell is the smallest living structure that is able to function … [Read more...] about What are the Characteristics of Living Things