1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mihalych1998 [28]
1 year ago
14

If plaque buildup reduces the radius of the artery by a factor of 2, by what factor does the flow rate change?

Biology
1 answer:
lisabon 2012 [21]1 year ago
8 0

If plaque buildup reduces the radius of the artery by a factor of 2, the flow rate becomes 1/16th of the original.

Coronary heart disease results from a deposition of plaque in the blood vessels which transport blood to the heart. When the flow of blood to the heart is hampered or obstructed, the heart can be harmed due to a deficiency of oxygen.

Moreover, if a large section of plaque that is deposited gets displaced from an artery wall, it can get stick in other arteries in the body as well,  including those present in the brain.

For convenience, an assumption can be made that the artery is cylindrical in shape with a radius of R. The flow rate of a viscous fluid (blood in this case) is determined by Poiseuille's Law, i.e. Q = (π/8) (ΔP/ηl)r4.

To learn more about Poiseuille's Law here

brainly.com/question/14830017

#SPJ4

You might be interested in
Normal homeostatic conditions require potassium concentrations to be about 1000 times higher inside the cell than in the blood.
sleet_krkn [62]

Answer:

The correct answer would be active transport by proteins.

When a molecule is transported against the concentration gradient it requires cellular energy and the process is termed as active transport.

The energy is either provided by the hydrolysis of the ATP (adenosine triphosphate) in primary active transport or by the electrochemical gradient in secondary active transport

Active transport takes place with the help of integral membrane proteins or transport proteins which form carriers or channels across the membrane.

Examples may include a sodium-potassium pump, uptake of glucose in small intestine et cetera.

7 0
3 years ago
Read 2 more answers
What term describes the inheritance of a trait which in the heterozygote has an intermediate expression between either allele?
snow_tiger [21]

Answer:

INCOMPLETE DOMINANCE

Explanation:

Incomplete dominance is an exception to Mendel's pattern of inheritance as he described in his LAW of DOMINANCE, that in an heterozygous state, an allele will mask the expression of its variant pair in a gene. Incomplete dominance has shown that an allele might not be completely dominant over its pair but instead form a hybrid that possesses an intermediate phenotype that is the combination of both parental phenotypes.

An example is when Mendel crossed peas that produced red flowers (RR) will peas that produced white flowers (rr). The red flower allele (R) did not show complete dominance over the white flower allele, instead a heterozygote F1 offspring (Rr) with pink flowers was produced. The pink color was an intermediate phenotype of both white and red.

6 0
3 years ago
Climate distribution of earth is primarily controlled by:
blondinia [14]
Sorry , I don't know
7 0
2 years ago
What is the main function of the endocrine system?
Romashka [77]

Answer:

c

Explanation:

to secrete hormones.this let the harmones travel to cells in other parts of body.

8 0
3 years ago
Read 2 more answers
What characteristics of living things are viruses missing?
Iteru [2.4K]
Viruses are different from living things in a way that they cannot live outside their host cells for a long time .and become crystalline.
3 0
2 years ago
Other questions:
  • Which two sentences support only the heliocentric model of the solar system and not the geocentric model?
    15·1 answer
  • Which factors improve soil fertility? select three answers
    5·2 answers
  • How does the density of ice compared to that of liquid water and water and why is
    11·2 answers
  • In the phosphorus cycle, phosphorus can recycle through waste products, decomposition, and of terrestrial and aquatic ecosystems
    6·2 answers
  • Did James D. Watson's discovery contribute to any of the following?
    9·2 answers
  • Please help me!!! <br> DUE TOMORROW!!<br> 55 POINTS!!
    9·1 answer
  • Explain how artificial selection can upset the process of natural selection.
    14·1 answer
  • Answer the questions below. Will mark the correct answer as brainliest and report irrelevant answers.
    7·1 answer
  • What type of plate boundary form trenches
    14·1 answer
  • Which statement best describes cellular respiration?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!