Gas exchange is the process of obtaining oxygen either directly from the air as in the case of unicellular organisms or by a respiratory system as in the case of multicellular organisms and releasing...
The respiratory system Any changes in our lifestyle and environment are responsible for poor respiratory system health, It is very important to keep our respiratory system healthy to keep away from diseases that affect...
In the inhalation process, we take oxygen gas, but in the exhalation process, we expel carbon dioxide gas and water vapor, so, the respiration process includes two processes which are inhalation and exhalation.
The respiratory system The human respiratory system consists of the nose, the pharynx, the trachea, two bronchi and two lungs, It is called also the respiratory apparatus, the ventilatory system and it is used...
We can not live without the air, It contains oxygen gas which burns the small particles of the digested food to produce energy, carbon dioxide gas and water vapor and this process is called...
What is the structure of the living organism’s body? The body of the living organism consists of a group of systems, Each system consists of a group of organs, Each organ consists of a...
