Question

describe the various methods of gracious exchange in animals​

Answer 1

There are four types of gas exchange systems:

• Integumentary exchange, which occurs through the skin.
• Gills, which exchange gases in water environments.
• Tracheal systems, which are used by insects.
• Lungs, which are found in land animals.

In animals, gas exchange follows the same general pattern as in plants. Oxygen and carbon dioxide move by diffusion across moist membranes. In simple animals, the exchange occurs directly with the environment. ... Hemoglobin binds loosely to oxygen and carries it through the animal's bloodstream.

Generally, animals breath-out (exhale) carbon dioxide and breath-in (inhale) oxygen. Thus, carbon moves from the blood in the form of carbon dioxide into the alveoli in the lungs while the oxygen inhaled moves from the alveoli in the lungs to the blood where it is transported round the body as oxyhaemoglobin.

The Need For Gas Exchange

Aerobic respiration yields large amounts of cellular energy (ATP) but requires oxygen. ... Efficient gas exchange ensures enough oxygen is supplied / carbon dioxide is removed in order to maintain cellular energy levels.

Gas exchange between tissues and the blood is an essential function of the circulatory system. In humans, other mammals, and birds, blood absorbs oxygen and releases carbon dioxide in the lungs. Thus the circulatory and respiratory system, whose function is to obtain oxygen and discharge carbon dioxide, work in tandem.

Three processes are essential for the transfer of oxygen from the outside air to the blood flowing through the lungs: ventilation, diffusion, and perfusion.