The small capillaries in the lungs are in close contact with the alveoli. A redblood cell takes up oxygen during the 0.5 s that it squeezes through a capillary at the surface of an alveolus. What is the diffusion time for oxygen across the 1-μm-thick membrane separating air from blood? Assume that the diffusion coefficient for oxygen in tissue is 2 × 10-11 m2/s.

Q: For a substance with a diffusion coefficient (D) of 1 x 10E-5 cm2.s-1, what is the diffusion time…

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A: volume and densities of three liquids are : V1 = 0.465 L , d1 = 2.83 gcm3V2 = 0.632 L , d2 = 0.83…

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Q: Three liquids that will not mix are poured into a cylindrical container. The volumes and densities…

A: Given: Three liquids that will not mix are poured into a cylindrical container. The volumes and…

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Q: liquids that will not mix are poured into a cylindrical container. The volumes and densities of the…

A: Force due to liquid column  F = mg     Density = mass / volume  So  Mass = volume × density

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A: Given : Volume of liquid 1 V1 = 0.578 L Density of liquid 1 ρ1=3.32 g/cm3 Volume of liquid 2 V2 =…

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A: Given data: Normal blood pressure is 12080.

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A: Write the equation for the diffusion coefficient. D=JAφ Here, The concentration gradient is "φ" The…

Q: A natural gas pipeline with a diameter of 0.384 m delivers 1.74 m^3 of gas per second. What is the…

A: Remember that Volume flow rate is given by: Q = V*A Q = Volume flow rate of gas = 1.74 m^3/s V =…

Q: The pulmonary artery, which connects the heart to the lungs, has an inner radius of 2.5 mm and is…

A: Given, inner radius = 2.5 mm length = 8.5 cm  and pressure drop = 380 Pa

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Q: What is the mass of air in a living room with dimensions 4.0 m × 6.0 m × 2.5 m?

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A: Given: Average cross sectional area of wing, A = 13 m2  Lift force, F = 97000 N

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Q: airplane flies on a level path. There is a pressure difference of 567 Pa between the lower and upper…

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Q: 14) If a solute diffuses through water an average distance of 20cm in 2hours, what is its diffusion…

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Q: Oxygen diffuses across the membranes that separate the air in the alveoli in the lungs from the…

A: Equation for diffusion time is,  t=x22D Where, t is diffusion time, and x is thickness and D is…

Q: An airtight box has a removable lid of area 2.36 x 102 m2 and negligible weight. The box is taken up…

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Q: The flow rate of blood through a 2.25 ✕ 10−6 m radius capillary is 3.80 ✕ 10−9 cm3/s. (a) What is…

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Q: Blood flows through the aorta at an average speed of v = 18 cm/s. The aorta is roughly cylindrical…

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Q: What is the diffusion time for oxygen accrues the 2um thick membrane separating air from blood?…

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Q: The aorta carries blood away from the heart and eventually branches into a large number of…

A: The approximate number of capillaries in the human body is 5.19 × 1010 capillaries.

Human Metabolism

Being described as the most complicated machine ever encountered by humans, the human body and the cell metabolism is nothing less than a wonder. Metabolism is the set of life-sustaining chemical reactions within organisms.