Question

Explain the process of breathing in the man.

Answer 1

Hint: The process is carried out by the respiratory system of the body that includes both the upper and lower respiratory tracts.

From a certain extent diaphragm, the process of nostrils to lungs the respiratory system extends and pathogens into the lungs to a certain extent, when nostrils and minute hair help to prevent the entry of the dust. Into the pharynx, the opening of the nasal canal that is followed by the nostrils. The food particles enter the trachea during the epiglottis present at the above of the larynges.

Complete answer: Respiration in an organism is defined as the process that consists of certain structures and organs that help in the intake of oxygen and release of carbon dioxide. The two main steps involved in breathing are inhalation and exhalation. Inhalation is a process through which air is taken into the lungs. In this process, the ribs move forward while the diaphragm contracts. The volume of the thoracic cavity increases and the pressure inside the lungs is reduced. The next step involves exhalation; it is a process through which the air is given out. The ribs go backward, while the diaphragm gets relaxed. As a result of which, the volume of the thoracic cavity reduces and the pressure inside the lungs is increased.

Additional information
In the alveoli of the lungs, the oxygen diffuses into the blood and the oxygen is absorbed by the haemoglobin in the red blood corpuscles. 50 lakhs of RBCs are found in the 1 ml blood and more haemoglobin are absorbed by the non-nucleated RBCs. In the haemoglobin, oxygen and iron are the transporting factors present in it.

Note: Nostrils, alveoli, pharynx, larynx, trachea, bronchi, and bronchioles are the respiratory pathways and lungs are the respiratory organs. Asthma, pharyngitis, laryngitis, allergic rhinitis, pneumonia, silicosis, asbestosis, etc. are some of the main respiratory diseases.