The respiratory system

The respiratory system is to provide oxygen to the blood and expel from the body of the waste gas, consisting mostly of carbon dioxide. The upper structures of the respiratory system are associated with sensory organs of smell and taste (in the nasal cavity and the mouth) and the digestive tract (of the oral cavity to the pharynx).

Respiratory organs separate from others at the level of the pharynx and become the respiratory tract, consisting of the larynx, the trachea and bronchi.

The respiratory system

The respiratory system
The bronchi are the number two and leave from the lower end of the trachea, at the level of the tracheal bifurcation, to then enter the hilum of the left and right lungs.

The lungs contain more fine lines, or bronchioles, responsible for transport air to the functional unit of the lungs: the Chamber.

There, in thousands of tiny cellular rooms that contain the lungs, the oxygen provided by the inspiration through the membrane of the alveolar walls to be transferred to the red blood cells in the capillaries. Conversely, waste gas pass of red blood cells in the alveoli air to be removed by the expiration.

Diaphragm, broad, thin muscle under the lungs provides with intercostal and abdominal, muscle contraction and expansion of the rib cage to respiration.

Ratings serve as structural support for all chest and pleural membranes provide the lubrication of the respiratory organs, avoiding friction during breathing.

The lungs
These spongy, large, conical, are your lungs. They play a vital role because they are responsible for the supply of oxygen in your body. The oxygen allows the body to burn its fuel, i.e. the nutrients contained in food.

The lungs are divided into two halves, right and left. The right lung has three lobes, while the left has two and has a place for the heart. The lungs of an adult may contain approximately three litres of air. Since the lungs have no muscles themselves, they are the chest muscles that are responsible for the work of breathing. The majority of this work is provided by a thin muscle located at the base of the lungs and called the diaphragm.

Respiration is a phenomenon, this even when you are unconscious. The resting respiratory rate of an average adult is 16 breaths per minute. Air that is inspired by down the trachea to the bronchi that branch into the right or left lung.

The bronchi themselves branch into several bronchioles, which are divided into half a dozen of alveolar ducts, which are narrow led in the air sacs. This structure branched uniting the trachea, the bronchi, the bronchioles, alveolar ducts and air sacs is often called “bronchial tree” because of its resemblance to the branches and leaves of a deciduous tree.

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