Question

write two experiments to prove autotrophic movements

Answer 1

The physical movements associated with the gaseous exchange are called breathing. The various structures that are involved in the breathing mechanism are the respiratory passage, the lungs, the outer and inner intercostal muscles, the diaphragm and the muscles attached to the diaphragm.

The breathing movements are controlled by the three respiratory centres of the medulla oblongata and pons Varolli in the human brain. The three respiratory centres are the inspiratory, expiratory (in medulla oblongata) and pneumotaxic centres (in pons Varolli). The respiratory centres are stimulated by the carbon dioxide concentration of the blood.

Thus, the breathing movements are involuntary, to a large extent. However, we can control the rate of breathing and extent of breathing but not for long.