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
maria [59]
3 years ago
6

If the blood pressure in your brain is 120 mm when you are lying down, what would it be when you stand up? Assume that your brai

n is 40 cm from your heart and that rho = 1060 kg/m3 for your blood. Note: Normally, your blood vessels constrict and expand to keep your brain blood pressure stable when you change your posture.
Biology
1 answer:
Mashutka [201]3 years ago
6 0

Answer:

The correct answer is 88.84 mmHg.

Explanation:

The pressure differential between the brain and the heart while standing up will be 120 - rho × g (gravity) × h, here h is the distance from the brain to the heart. The h is 40 cm or 0.4 m.  

rho×g×h = 1060 kg/m³×9.8 m/s²×0.4m  

= 4155 Pa  

Now converting Pa to mmHg we get:  

4155 Pa × 760 mmHg / 1.01325 × 10⁵ Pa  

= 31.16 mmHg  

Thus, the pressure in the brain now is 120 - 31.16  

= 88.84 mmHg (hypotension)  

You might be interested in
Which of the following is NOT true of bacteria?
enyata [817]

If you go on mc3.edu/admissions/applying-to-mccc/testing-and-assessment/assets/biology-placement-test.pdf page 11 it will tell you all the answers to your questions....

Download pdf
5 0
3 years ago
Florida receives about 54 inches of rainfall a year. What would happen if all this rain were to fall in one day?
bogdanovich [222]
B flooding it would definitely flood
8 0
3 years ago
Read 2 more answers
the solution inside a plant cell is approximately a 1% saline solution. in a 25% nacl solution the cytoplasm of a plant cell wil
mrs_skeptik [129]
<span>The cell has 1% concentration of the salt. The external environment is highly concentrated with 25% saline solution. This will lead to release of water outside the cell, by passive diffusion from a region of high conentration of solvent to lower concentration. Thus, the cell will shrink.</span>
3 0
3 years ago
Read 2 more answers
Is it Possible for 2 yellow bellied noombats to have a green bellied child? Identify the genotypes of the parents and complete t
madreJ [45]
We need to know the dominant and recessive traits of the noombats in order to answer this question. If both of them has yellow as the dominant trait, then green may be recessive. In that case there is a chance for them to have a green bellied child. Its impossible to tell the percentage though because we don't know enough about the animals.
6 0
3 years ago
Scenario 1: In a class of 50 students, 18 take Chorus, 26 take band, and 2 take both Chorus and Band.
satela [25.4K]

Answer:

Sample size is 50

Explanation:

The sample size simply refers to the number of samples in our dataset

In this question, we are dealing with a total of 50 students

So what this mean is that the number if samples which is our sample size is the number 50

7 0
3 years ago
Other questions:
  • A biologist made the following statement: like all living things the organisms that form plankton are made up of cells
    8·1 answer
  • rabbits can have curly ears or long ears. a homozygous curly-eared rabbit mated with a homozygous long-eared rabbit. all the bab
    6·1 answer
  • The mRNA codon for leucine is 5-UUG-3, and the tRNA anticodon is A) 5-UUG-3. B) 5-GUU-3. C) 5-TTC-3. D) 5-AAC-3. E) 5
    5·1 answer
  • Which of the following provides the best comparison between reptiles and fish?
    6·2 answers
  • Which of these terms describe the data? Check all that apply.
    9·1 answer
  • When in U.S, history did pollution start to become an issue? Explain why pollution was not an issue prior to this time period.
    13·1 answer
  • How many homes can a single wind turbine power?<br><br> 500<br> 300<br> 400<br> 600
    10·1 answer
  • Bone marrow stem cells differentiate into any type of cell. true or false?
    12·2 answers
  • (1 point)
    11·1 answer
  • Scientists use a ______ to detect and study earthquake waves. Two types of Earthquake waves that travel through Earth’s interior
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!