Molina Healthcare Silver 100 Plan Review. Worst insurance in the world. At the time I got this insurance I was a full time college student working part time in retail and couldn't afford much for insurance.
Functionally, the respiratory system is separated into a conducting zone and respiratory zone. The conducting zone consists of the nose, pharynx, larynx, trachea, bronchi, and bronchioles.These structures form a continuous passageway for air to move in and out of the lungs. The respiratory zone is found deep inside the lungs and is made up of the respiratory bronchioles, alveolar ducts, and alveoli.These thin-walled structures allow inhaled oxygen (O2) to diffuse into the lung capillaries in exchange for carbon dioxide (CO2).he lower tract structures are found in the thorax or chest and include the trachea, bronchi, and lungs (= bronchioles, alveolar ducts, and alveoli). * Please note that many authorities include the larynx with the lower respiratory tract structures.
Lower respiratory (tract) infection or LTRI is a generic term for an acute infection of the trachea (windpipe), airways and lungs, which make up the lower respiratory system. LTRIs include bronchitis, croup and pneumonia. Although influenza (the flu) can involve the lower respiratory system, it is not considered among the group of illnesses referred to by the term lower respiratory infection..