PHYSIOLOGY
PULMONARY PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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take blood toward heart
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take blood away from heart
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exchange gases
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exchange fluids
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Detailed explanation-1: -CAPILLARIES are blood vessels in the walls of the alveoli. Blood passes through the capillaries, entering through your PULMONARY ARTERY and leaving via your PULMONARY VEIN. While in the capillaries, blood gives off carbon dioxide through the capillary wall into the alveoli and takes up oxygen from air in the alveoli.
Detailed explanation-2: -Diffusion. Diffusion is the process by which exchange of gases take place between blood and body tissues. Respiratory gas is transported to each and every cell by blood. Tiny capillaries provide the blood flow to even remote parts of the body tissue.
Detailed explanation-3: -Gas exchange occurring between the blood in systemic capillaries and fluid within tissue cells is called internal respiration.
Detailed explanation-4: -a) There are many capillaries around every alveoli. This good blood flow maintains a steep concentration gradient between the oxygen (and carbon dioxide) in the alveoli and the blood so that the rate of diffusion is faster.