One type of cells are the red blood cells (RBC) which contain a red pigment called haemoglobin. Haemoglobin binds with oxygen and transports it to all the parts of the body and ultimately to all the cells. The blood also has white blood cells (WBC) which fight against germs that may enter our body. The …
In a plant the roots take in air present in the soil. Leaves have tiny pores called stomata through which they exchange gases. The breakdown of glucose in the plant cells is similar to that in other living beings.
Living cells of the plants, the root cells also need oxygen to generate energy. Roots take up air from the air spaces present between the soil particles
Respiration of Fish gills in fish help them to use oxygen dissolved in water. Gills are projections of the skin. You may wonder how gills help in breathing. Gills are well supplied with blood vessels for exchange of gases.
Earthworm: that earthworms breathe through their skins. The skin of an earthworm feels moist and slimy on touching. Gases can easily pass through them. Though frogs have a pair of lungs like human beings, they can also breathe through their skin, which is moist and slippery.
These openings are called spiracles . Insects have a network of air tubes called tracheae for gas exchange
The percentage of oxygen and carbon dioxide in inhaled and exhaled air. Inhaled air Exhaled air21% oxygen 16.4% oxygen 0.04% carbon dioxide 4.4% carbon dioxide78 % Nitrogen 78 % Nitrogen
Regular traditional breathing exercise (pranayama) can increase the capacity of lungs to take in more air. Thus more oxygen can be supplied to the body cells resulting in release of more energy.
Mechanism of breathing:- Normally we take in air through our nostrils. When we inhale air, it passes through our nostrils into the nasal cavity. From the nasal cavity, the air reaches our lungs through the windpipe. Lungs are present in the chest cavity . This cavity is surrounded by ribs on the sides. A large, …
When we inhale air, it passes through our nostrils into the nasal cavity.
