Respiratory organs, Biology

Respiratory Organs

These are the organs regarded with the gaseous exchange, i.e., intake .of oxygen and output of carbon dioxide. They have generally greater rate of gas exchange per unit area than the general body surface. Thus respiratory organ may be a part or special region of the body or may be an organ specifically meant for this purpose such as lung. In non-chordates various types of respiratory organs are found. These organs may different in their structure but all are provided with a large surface of contact with the surrounding environment and are richly supplied with blood vessels and capillaries which make sure rapid gaseous exchange between the external environment and the blood. The external environment is generally water. Even when it is air, there is a thin film of water covering the respiratory surface and exchange of gases takes place through this aqueous film. The respiratory organs that work in water are gills; those which work in air, are lungs. They may project outwards (gills) of they may be invaginations (lungs).

Posted Date: 2/4/2013 5:04:43 AM | Location : United States







Related Discussions:- Respiratory organs, Assignment Help, Ask Question on Respiratory organs, Get Answer, Expert's Help, Respiratory organs Discussions

Write discussion on Respiratory organs
Your posts are moderated
Related Questions
Matthew Meselson and Frank Stahl grew bacteria in media having either N14 or N15 for various numbers of cell divisions. DNA from the bacterial samples were isolated and spun within

Q. What amount of catalyst is obsessive in the reaction it catalyzes? Catalysts are not obsessive in the reactions they catalyze.

Functions of Respiratory Pigments As you have learnt in the preceding sub-sections, the pigments are the carrier of oxygen. In the nonexistence of respiratory pigments the blo

Diagrammatic representation of Implant placement Implant placementIt is located directly apical to the tooth it is replacing and not in an embrasure space. The angulati

State the term Cercaria? A stage in the life cycle of trematode flukes. Cercaria develops from redia found in intermediate host. This tadpolelike organism is released from inte

Determine about the Klove Grooved Pegboard Test The subject must place pegs shaped like keys into a board having recesses that are oriented in randomly varying directions. The

(a) Explain the structure of a human sperm. (b) Give a schematic representation showing the events of Spermatogeninesis in human male.

Which of the following is an effect of the following drugs? A. Drug A is an agonist of the Vasopressin2 Receptor (V2R).  High levels of Drug A in the extracellular spaces surro

Prothoracic Gland or PTC Prothoracic gland (PTC) or moulting gland and ecdysone or moulting hormone The 3 rd endocrine gland-prothoracic gland- is an irregular branching

Q. Explain nutrient requirements during hypertension? In order to meet the above objectives, we need to understand the nutrient requirements during hypertension. Let us start w