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|Lung development in-utero occurs in five main stages. |The first stage begins with the development of the lung bud from the respiratory diverticulum during week 4 of embryogenesis. |The stages are as follows [10] [11] [12] [13] :.

craigslist norfolk virginia | us | us | Follow | Categories right ventricle conveys deoxygenated blood to the lungs via the pulmonary artery. |The lungs will then breathe in air, which transfers oxygen through the alveoli into the dense capillary network surrounding the alveoli.

|The blood will then travel through the pulmonary vein into the left atrium, where it gets ejected from the left ventricle into the aorta. |The aorta is the major artery that further branches into the system arteries, delivering blood to the cerebral, coronary, renal, splanchnic, and skin. |Systemic veins return deoxygenated blood from these tissues to the vena cava, where it enters the right atrium and begins the cycle again.

|The function of the pulmonary system is to extract oxygen from the environment and provide it for aerobic respiration at the cellular level. |Oxygen is ultimately used to produce ATP, and carbon dioxide is breathed out with other metabolic byproducts. |Respiratory tract organs facilitate the process of gas exchange, including the nose, oral cavity, throat, trachea, bronchi, and lungs.