Advantages for having the surfaces for oxygen and carbon dioxide exchange embedded deep in lung tissue.?
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The diffusion of gas across a membrane requires that the membrane be wet.  If the wet membrane were on the surface the animal would quickly dry out.  Since the exchange is located deep in a lung there is opportunity for the water to be recovered before exhaling.
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Cause cells need oxygen.
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?? \n\nWhy would there be any disadvantages associated with adequate ventilation since breathing is occuring at a normal rate and the oxygen is being delivered to the cells?
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The respiratory system starts with the nose and mouth where we breathe in oxygen and expel carbon dioxide. The oxygen travels down the windpipe(trachea) and into the bronchi contained in each lung. The windpipe splits into two bronchi which go into each lung. Each bronchi spreads into smaller structures called bronchioles. These spread through each of the lungs. Each bronchiole has a number of smaller structures known as alveoli. The alveoli have a very large surface area and is where gas exchange occurs. Oxygen replaces carbon dioxide and is taken to all parts of the body via the bloodstream. Carbon dioxide is toxic to humans in high concentrations which is why it is breathed out. \nThe main structures are nose, mouth, windpipe, lungs, bronchi, bronchioles, alveoli.
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Insects exchange oxygen and carbon dioxide between their tissues and the air by a system of air-filled tubes called tracheae.  Tracheae open to the outside through small holes called spiracles.  Among the smaller or less active insects, gas exchange though the tracheal system is by simple diffusion.
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first: air is warmed by the rich vascular net in the nasal mucosa. Second, air is humidified by nasal secretions. Third, air is filtrated and some gross particles are captured by the endoturbinates, to prevent tehir entrance into the larynx.\n\nThe accesory muscles expand (internal intercostal)or contract (external interconstal)the thoracic box like a pump. that´s the way they help .\n\nCarbon monoxide is very dangerous because it has several times more affinity with the hem group of hemoglobyn than oxygen. So, in an environment rich in carbon monoxide, when inspirated it binds to hemoglopbyn, displacing oxygen molecules from the Hem group and  preventing them to reach the organs, causing tissue anoxia and sometimes death. Treatment involves oxygen therapy, and sometimes a hyperbaric chamber( a place with high concentrations of oxygen in the air, and at a higher atmospheric pressure).
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The lungs are surrounded by two membranes, the pleurae. The outer pleura is attached to the chest wall and is known as the Parietal pleura; the inner one is attached to the lung and other visceral tissues and is known as the Visceral pleura. In between the two is a thin space known as the pleural cavity or pleural space. It is filled with pleural fluid, a serous fluid produced by the pleura.\n\nThe pleural fluid lubricates the pleural surfaces and allows the layers of pleura to slide against each other easily during respiration. It also provides the surface tension that keeps the lung surface in contact with the chest wall. During quiet breathing, the cavity normally experiences a negative pressure (compared to the atmosphere) which helps adhere the lungs to the chest wall, so that movements of the chest wall during breathing are coupled closely to movements of the lungs.\n\nThe pleural membrane also helps to keep the two lungs away from each other and air tight, thus if one lung is punctured and collapses due to an accident, the other pleural cavity will still be air tight, and the other lung will work normally\n\nThe parietal pleura is highly sensitive to pain; the visceral pleura is not. The visceral pleura has a dual blood supply, from the bronchial and pulmonary arteries. In humans, there is no anatomical connection between the left and right pleural cavities, so in cases of pneumothorax (see below), the other hemithorax will still be able to function normally.\n\nYou could get more information from the link below...
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depends upon the environment.  Under normal conditions, a few hundred pounds will suffice to keep the diaphram from inflating the lungs.  In deep water, there are experimental blends that allow oxygen levels to be maintained.
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b)less,because while you exercising your lungs needs more extra oxygen,makes your body need to breath more air
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Alveoli - Each bronchiole ends in a tiny air chamber that looks like a bunch of grapes.  Each chamber contains many cup-shaped cavities known as alveoli.  The walls of the alveoli, which are only about one cell thick, are the respiratory surface.  They are thin, moist, and are surrounded by several numbers of capillaries.  The exchange of oxygen and carbon dioxide between blood and air occurs through these walls.  The estimation is that lungs contain about 300 million alveoli. Their total surface area would be about 70 square meters.  That is 40 times the surface area of the skin.  \n\nFUNCTIONThe alveoli allow this gas exchange to occur. Each alveoli has a network of capillaries that carry oxygen-poor red blood cells. The capillaries bring the red blood cells very close to the air space in the alveoli. The air in the alveoli is oxygen rich. Oxygen moves from the alveolar space into the red blood cell by diffusion. This can happen very quickly because the surface are of the alveoli is large and the membranes separating the lungs from the red blood cells are very thin. The rate of oxygen diffusion is dependent on surface area, so gas exchange occurs more quickly with larger surface areas.
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Lung is a special organ which allows gas exchange. Air passes through trachea, bronchi, bronchioles and finally alveoli. Oxygen will diffuse form the alveoli into the blood plasma whereas the diffusion of carbon dioxide occurs in opposite direction.
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CO2 is carried through the blood in the body to the lungs to be exhalated.
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oxygen and carbon dioxide
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Depends on the disease, or type of disease.  Google the American lung association, they have links to national resources.  Good luck.
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my grandpa has 1 lung and lives a easy-going life at a VERY low altitude where there is lots of humidity-its easier for him to breathe that way
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Collapsed lung(s) can leave scars in the tissue.  After time, these scars harden and cannot be fixed.  The alveoli sacs become damaged and can no longer transfer oxygen and carbon dioxide. Because of this, the rest of the lung has to breathe harder to get more air into the body which in turn creates stress on the heart and brain cells.  There is no cure.  My best wishes.  there is of course a chance something else is going on..please see a dr.
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First the diaphragm under the lung expands creating an area of low pressure in the lungs leading to the air from outside the body to rush into the mouth to the trachea to the bronchi to bronchi oles and then to alveoli. The lung is like a sponge and has an increasingly small system of tubes that are lined with microscopic alveoli that are lined with capillaries. When O2 molecules reach the alveoli they diffuse oppositely to carbon dioxide which is the body's waste gas. The blood cells go from the capillaries in the alveoli to venules to the pulmonary vein where it enters the left atrium and then goes to the left ventricle where it is rushed out of the heart through the aorta where it divides into other arteries, arterioles, and then capillaries.