The circulatory and respiratory system of mollusks is typically of a high order.
After his book on diseases of the head, his most important section is on diseases of the respiratory system.
The most interesting feature of the internal anatomy of the insect body is the respiratory system.
This requires increased respiration, which demand is satisfied by rapid development of the respiratory system.
These are the openings into the tracheal or respiratory system.
The respiratory system of insects is very different from that of other animals.
Closely bound up with the respiratory system is the nature of the circulation of blood through the gills.
Changing environment induced changes in the respiratory system and far-reaching consequences followed.
This has been called a branchial arm, not that it carried a branchia, but on account of its relation to the respiratory system.
The respiratory system is formed of two series of appendages, as found beneath the thorax.
respiratory system n.
The integrated system of organs involved in the intake and exchange of oxygen and carbon dioxide between the body and the environment and including the nasal passages, larynx, trachea, bronchial tubes, and lungs.
|respiratory system |
The system of organs and structures in which gas exchange takes place, consisting of the lungs and airways in air-breathing vertebrates, gills in fish and many invertebrates, the outer covering of the body in worms, and specialized air ducts in insects.
The organs in the body involved in respiration. Air enters the body through the nose and mouth and travels down the trachea, through the bronchial tubes, and finally into the lungs. Once in the lungs, the air is drawn into an enormous number of thin-walled sacs richly supplied with capillaries. The exchange of oxygen and carbon dioxide in the blood takes place in these tiny sacs.