As fluid moves through a vessel, which factors determine the flow resistance? (Select all that apply.)

Biology

1 answer:

oksano4ka [1.4K]4 years ago

4 0

Answer:

- the length of the vessel

- the radius of the vessel

- the viscosity of the fluid

Explanation: A blood vessel can contract and relax so therefore the most important of these three factors is the radius of the blood vessel as very small changes in the radius of the blood vessel may lead to large changes in the resistance. The smaller (more narrow) the blood vessel is the more difficult it will be for the blood to flow increasing blood pressure and therefore resistance and an increase in radius will reduce resistance. The longer the blood vessel the more resistance. Blood viscosity generally does not change that much but it can be changed by factors such as temperature, hematocrit (ratio of volume of red blood cells to total blood volume) and low flow states. The more viscous the blood the higher the resistance. At higher temperatures the blood would be less viscous and there will be reduced flow resistance.

You might be interested in

Bluegill fish reproduce when males fertilize eggs laid by female fish is an example of which?

Dmitrij [34]

Explanation:

Reproduction in Fishes. Nearly all fish reproduce by sexual reproduction - the fusion of sperm produced from testes and eggs produced from ovaries. ... Fertilization is external in most fish species. Large quantities of eggs and sperm are simultaneously released into the water by females and males.

8 0

3 years ago

What is the main difference between mechanical and electrical waves?

cupoosta [38]

Electromagnetic waves are waves that have no medium to travel whereas mechanical waves need a medium for its transmission. Electromagnetic waves travel in a vacuum whereas mechanical waves do not

5 0

3 years ago

Rock layers W, Y, and Z and fault X are shown. The rock layers and the fault were formed at different times.

gladu [14]

Answer:

It’s D

Explanation:

4 0

3 years ago

Which of the following is used to determine if a star is moving closer to Earth? (2 points)

Zigmanuir [339]

Doppler shift - if it’s red shift it’s moving away from you. If it’s blue shift it’s moving towards you.

7 0

3 years ago

Read 2 more answers

How did you test your hypothesis? which variables did you control in your experiment and which variable did you change in order

elixir [45]

Hypothesis is a proposed explanation which is made on the basis of given experimental data taken as starting point for further investigation. All hypothesis test are conducted in a same manner fiollowing the four main steps:

1. State the hypothesis

2. Formulate an analysis plan

3. Analyzing the data obtained

4. Final step is to analyze the results

There are three types of variables taken in an experiment:

1. Independent variable: light, temperature, humidity

2. Dependent Variable: these depends upon the other variable. changes in the independent variable may cause the dependent variable to change, for example, growth of plant is a dependent variable which depends upon the amount of light(independent variable), the plant receives

3. Controlled Variable: these variable can be controlled and prevented from being change like ty[pe of plant, type of soil

8 0

3 years ago