The lungs have a greater density of pulmonary capillaries compared to systemic capillaries due to the need for efficient gas exchange. The pulmonary capillary network surrounds the alveoli, allowing for optimal diffusion of oxygen and carbon dioxide between the air and blood. This high density facilitates the rapid exchange of gases necessary for maintaining proper oxygen levels in the bloodstream while removing carbon dioxide. Additionally, the lower pressure in the pulmonary circulation allows for a larger surface area for gas exchange without risking damage to the delicate alveolar structures.
Chronic obstructive pulmonary disease (COPD) refers to chronic obstructive bronchitis and emphysema. Its signs and symptoms include; An ongoing cough that often produces large amounts of mucus,Shortness of breath, especially during physical activity,Wheezing and Chest tightness.
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cellular respiration
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Melanin
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Fusion of hydrogen.
Nuclear power produces around 11% of the world's energy needs, and produces huge amounts of energy from small amounts of fuel, without the pollution that you'd get from burning fossil fuels.
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black color.
Purpura is a bleeding disorder that occurs when capillaries rupture, allowing small amounts of blood to accumulate in the.tissues. In AP, this occurs because the capillaries are blocked by protein complexes formed during an abnormal immune reaction