Class 11 (Cbse/UK-board) Biology.

This will be class you will not forget. Human physiology(Breathing and Exchange of Gases). 

We need energy to perform various activities. This energy is derived from the catabolism of various components of food, e.g. proteins, carbohydrates, fats, etc. Oxygen is required for catabolic processes and carbon dioxide is released in the process. So the body requires a continuous exchange of gases, oxygen from the atmosphere is taken inside and carbon dioxide produced is taken out. This process of gaseous exchange is called breathing or respiration.

Steps of Respirations

Breathing or pulmonary ventilation by which oxygen from the atmospheric air is drawn inside and carbon dioxide rich in alveolar air is released out. Diffusion on both oxygen and carbon dioxide across the alveolar membrane. Gases are transported throughout the body cells by blood.

Join this class for interactive experience

This will be class you will not forget. 

Future class on following 

Breathing and Exchange of Gases

Body Fluids and Circulation

Excretory Products and their Elimination

Locomotion and Movement

Neural Control and Coordination

Chemical Coordination and Integration