Table of Contents
Functional Significance of Respiration
Respiration is the process that produces energy in cells. The energy is used for many purposes, including the synthesis of new molecules, the movement of muscles, and the transmission of nerve impulses.
The functional significance of respiration is to provide energy to the cells of the body. This energy is used to carry out the various functions of the cells, including the synthesis of new proteins, the transport of molecules across cell membranes, and the production of cellular energy in the form of ATP. Respiration also helps to remove waste products from the cells
| Animal group | Respiratory Structure |
|---|---|
| Annelids | Skin |
| Arthropods | Gills, trachea, book lungs, book gills |
| Molluscs | Gills, pulmonary sac |
| Echinodermata | Dermal branchiae, tube feet |
Respiratory Organs of the Animals
The respiratory organs of animals are used to extract oxygen from the air and to expel carbon dioxide. The lungs are the most common respiratory organ in animals. They are a pair of spongy organs located in the chest cavity. The lungs are enclosed in a pleural membrane that allows them to expand and contract. The surface of the lungs is covered with tiny air sacs called alveoli. The alveoli are in contact with the capillaries of the circulatory system, which allow the exchange of gases between the lungs and the blood.
The respiratory system also includes the nose, mouth, and throat. The nose is used to warm and humidify the air before it enters the lungs. The mouth and throat are used to suck in air and to expel carbon dioxide.
