What is the diffusion time for oxygen accrues the 2um thick membrane separating air from blood? Assume that the diffusion coefficient for oxygen in tissue is 1.1 * 10^-11 m^2/s The small capillaries in the lungs are in close contactwith the alveoli. A red blood cell takes up oxygenduring the 0.75 s that it squeezes through a capillaryat the surface of an alveolus.

Name: What is the diffusion time for oxygen accrues the 2um thick membrane s
Uploaded: 2024-03-20T06:51:10.000Z
Channel: Bartleby
Description: What is the diffusion time for oxygen accrues the 2um thick membrane separating air from blood? Assume that the diffusion coefficient for oxygen in tissue is 1.1 * 10^-11 m^2/s The small capillaries in the lungs are in close contactwith the alveoli.

In the question it is given that small cap le is in the lungs are in close contact with the alveoli…

Answered: What is the diffusion time for oxygen…

Science

Physics

What is the diffusion time for oxygen accrues the 2um thick membrane separating air from blood? Assume that the diffusion coefficient for oxygen in tissue is 1.1 * 10^-11 m^2/

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter14: Fluid Mechanics

Section: Chapter Questions

Problem 76P: The heart of a resting adult pumps blood at a rate of 5.00 L/min. (a) Convert this to cm3/s. (b)...

See similar textbooks

Similar questions

The flow of blood through a 2.00106 m -radius capillary is 3.80109cm3/s . (a) What is the speed of be blood now? (b) Assuming all the blood in the body passes through capillaries, how many of them must there be to carry a total flow of 90.0 cm3/s?
Oxygen reaches the veinless cornea of the eye by diffusing through its tear layer, which is 0.500-mm thick. How long does it take the average oxygen molecule to do this?
Item 12 The small capillaries in the lungs are in close contact with the alveoli. A red blood cell takes up oxygen during the 0 75 s that it squeezes through a capillary at the surface of an alveolus.
L (a) The heart pumps blood into the aorta at a rate of 4 . Calculate the average speed of blood if min the aorta's diameter is 2.1 cm. 1155 V blood cm S (b) The aorta branches many times until the blood finally reaches the smallest branch: the capillaries. Each capillary has an average diameter of 6.9 μm and the blood slows down to 0.5 the number of capillaries in the body. Does this answer look reasonable? mm Calculate . S n 1840 caps capillaries (c) For what duration of time is a red blood cell in a capillary if the average capillary length is 1 mm? t = 0.0867 S
(a) Find the average time required for an oxygen molecule to diffuse through a 0.200-mm-thick tear layer on the cornea. (b) How much time is required to diffuse 0.500 cm3 of oxygen to the cornea if its surface area is 1.00 cm2?
Inthelungs,therespiratorymembraneseparatestinysacsofair(absolute pressure=1.00x105 Pa) from the blood in the capillaries. These sacs are called alveoli, and it is from them that oxygen enters the blood. The average radius of the alveoli is 0.125 mm, and the air inside contains 14% oxygen, which is somewhat smaller amount than in fresh air. Assuming that the air behaves as an ideal gas at body temperature (310 K), find the number of oxygen molecules in one of the sacs.
L (a) The heart pumps blood into the aorta at a rate of 4 the aorta's diameter is 2.1 cm. Calculate the average speed of blood if min V blood = cm S (b) The aorta branches many times until the blood finally reaches the smallest branch: the capillaries. Each capillary has an average diameter of 6.9 μm and the blood slows down to 0.5 the number of capillaries in the body. Does this answer look reasonable? mm Calculate . S n = caps capillaries (c) For what duration of time is a red blood cell in a capillary if the average capillary length is 1 mm? t = (d) Why does the blood need to flow much slower through the capillaries than the aorta? ○ A. The capillaries are thin and might burst. ○ B. There must be sufficient time for the exchange of substances to occur across the cell membrane of the capillaries. O C. There is a smaller cross-sectional area. ○ D. None of these.
If the blood vessel due to plaque buildup narrows to 50% of its diameter, what must be the speed of bloodthrough the narrowed diameter, when 50 cm/s is the speed through healthy diameter?
Q1. a) In an adult, the aorta’s radius is normally 1.5 cm and blood moves through it at the average velocity of 30 cm/s. If a typical capillary vein has a constant radius of 5 x10-6m andblood passes through them with a velocity of 0.1 cm/s, approximately how many capillaries areneeded in a body? b) Benzene at 1 atm and 80⁰C enters the pipe system given in the below figure, with a Reynoldsnumber of 130000 and leaves the system at 60⁰C. Assuming that diameters of the pipes at theexit are equal to each other, calculate the Reynolds number on one of the exit pipes (density ofliquid benzene at 80⁰ C= 813 kg/m3and at 60⁰C = 835 kg/m3).
The aorta pumps blood away from the heart at about 40 cm/scm/s and has a radius of about 1.0 cmcm.It then branches into many capillaries, each with a radius of about 5××10−4−4 cmcm carrying blood at a speed of 0.10 cm/s How many capillaries are there?
Balloon angioplasty is a technique to restore blood flow through coronary arteries that have been narrowed by the build-up of plaque. The surgeon threads a catheter into the coronary artery, then inflates a balloon that compresses the plaque against the wall of the artery. Suppose a diseased coronary artery has a diameter of 2.0 mm. To what diameter must it be expanded to increase the blood flow by a factor of 5.0 with no change in pressure?
The approximate diameter of the aorta is 0.50 cm; that of a capillary is 10 μm. The approximate average blood flow speed is 1.0 m/s in the aorta and 1.0 cm/s in the capillaries. If all the blood in the aorta eventually flows through the capillaries, estimate the number of capillaries in the circulatory system.