0

# What is the effect of reducing the radius of the air flow tube on respiratory volumes?

Updated: 4/28/2022

Wiki User

12y ago

Volumes can be the same if you lengthen the time of inhalation or exhalation but your flows will be reduced significantly. The effect of radius on air flow is a relationship that is to the power of 4. As an example, if you decrease the radius by half, the flow rate is reduced to 1/16th of the original (1/2 squared and then squared again).

This is why a slight reduction in radius can be quite severe. For asthmatics and those with COPD, the problem often isn't getting air in as much as getting air out.

Wiki User

12y ago

Earn +20 pts
Q: What is the effect of reducing the radius of the air flow tube on respiratory volumes?
Submit
Still have questions?
Related questions

### What is the effect of reducing afferent arteriole radius on filtration?

reducing afferent arteriole radius decreases filtration rate

h = 8.84

### What is the effect of reducing afferent arteriole radius on filtration rate?

As the afferent arteriole dilates it exposes the glomerulus to an increased blood pressure, closer and closer to that of the full systemic blood pressure. This increases GFR and Glomerular pressure. -6th Year Medical Student

### How do you decrease he size of a circle?

By reducing its radius or diameter.

### How can you find the ratio of radius of two cones when you have the ratio of volumes of that two cones?

You cannot because the volumes of the cones also depend on their heights.

### How many times greater is the volume of a sphere with a radius of 5 than a radius of 2.5?

Volumes: 523.5987756/65.44984695 = 8 times greater 53/2.53 = 8

### Describe the effect on the area of a circle when the radius is doubled?

the radius is from the center of the circle to the edge so that's how you find the radius.

### Why does the forced expiratory volume percentage decrease as the radius of the airways is decreased?

Reducing the radius of the airways will affect the capacity of the lungs to exhale the maximum amount of air

### How many spheres of mercury each with a radius of r should combine to form a single sphere with a radius of 3r?

Volume of the sphere varies as the cube of the radius.Tripling the radius increases the volume by a factor of (3)3 = 27.It takes 27 spherical volumes with radius 'r' to fill one spherical volume with radius '3r'.

### What effects the cylinder more doubling the radius or doubling the height?

They both have the same effect on the surface area of the pipe, but the radius has more effect on its volume/capacity.

### Can you calculate the volumes of the Earth and the Moon?

Based on what? If you know the radius, you can use the formula for a sphere - which is a good approximation in the case of Earth and Moon.

### If ratio of the radius of the spheres is 1.3 find the ratio of their volume?

If the ratio of the radii is 1:3 then the ratio of volumes is 1:27.