Concept Map of Human respiratory system

 1) lungs are Pinkish in colour
 2) They are spongy
 3) They are protected by Ribcage
 4) They show distinction. (Filled        with Air)
 5) They are elastic
 
       Facts about Human respiratory system.

• The right lung is slightly larger than the left.
• Hairs in the nose help to clean the air we breathe as well as warming it.
• The highest recorded "sneeze speed" is 165 km per hour.
• The surface area of the lungs is roughly the same size as a tennis court.
• The capillaries in the lungs would extend 1,600 kilometres if placed end to end.
• We lose half a litre of water a day through breathing. This is the water vapour we see when we breathe onto glass.
• A person at rest usually breathes between 12 and 15 times a minute.
• The breathing rate is faster in children and women than in men.

Mechanism for Human Respiration:-

    Firstly, air enters the respiratory system through the nostrils, which then proceeds to the nasal cavity, followed by the pharynx, oesophagus, larynx, and then the trachea, which branches into two bronchi. The bronchus branches into smaller bronchioles, which have alveoli at their tips to absorb and release air. This exchange of gases take place in the lungs.

The “surface” of the lungs is actually the “aveoli” small grape like structures. Think of mini microscopic balloons. On the inside is the “air” on the outside are the capillaries, etc. There are million of these. These are the “buisness end” of the lungs.

Everything else is “highway” to bring air from ourside the body to the aveoli. The Nose, Mouth, trachea, Main stem Bronchus, Bronchi, Broncheos, Terminal brochi…all “highway”.

In the typical adult male the “lung volume” changes depending on the cycle of respiration, and can vary up to 3000 cc, but typically is around 500–700 cc. By comparison, the “highway”, officially called “dead air space” is about 150 cc.

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