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
GalinKa [24]
3 years ago
13

Question 11 (1 point) What prevents backflow of urine into the kidneys? O

Biology
1 answer:
Greeley [361]3 years ago
5 0

Answer:

#Mitral valves

There is a valve at the meeting point between each ureter and the bladder to prevent the backflow of urine into the kidneys.

Urinary reflux means that one (or both) of these valves is not working properly.

If you have urinary reflux, during urination the urine travels up the affected ureter to the kidney instead of flowing out of the body.

Urinary reflux most commonly occurs in babies and children.

In most cases, the valve will correct itself as a child grows and matures.

In severe cases, surgery may be needed to remodel the valve.

#Urine flows from each kidney through tubes called ureters and into the bladder. When the bladder is full, it squeezes and sends the urine out through the urethra. No urine should flow back into the ureter when the bladder is squeezing. Each ureter has a one-way valve where it enters the bladder that prevents urine from flowing back up the ureter.

You might be interested in
A community wants to build an energy source to replace its coal power plant. The planners want it to be safe, renewable, and hav
Luba_88 [7]

Answer:

Solar energy can be used

Explanation:

Solar energy can be regarded as a radiant light and heat, it is an energy that is gotten from the Sun which is been trapped with the help of

range of ever-evolving technologies. This technologies could be photovoltaics as well as solar heating, and solar thermal energy. Solar energy is gotten from the sun and is been converted to "thermal energy" or "electrical energy". It's one of most abundant source of renewable energy with minimal impact on the environment. It is a very safe form of energy since it doesn't release CO2 or carbon monoxide to the atmosphere like coal power plant

7 0
3 years ago
There is a legend about an autopsy having been performed on a space alien in New Mexico, many decades ago. Assuming that this al
BartSMP [9]

Answer:

In the given case, the brain of the alien would be showing an enlarged region with surface grooves and folds. It is nothing but the cerebral cortex and mainly the neocortex. As the name suggests that it is the latest addition to the brain and is regarded to be originated by the process of evolution.  

It is the main region of extraordinary cognitive tendencies like reasoning, thinking, analysis, and other things. As mentioned in the question, that alien is trained like astronauts on the Earth, thus, this neocortex would be certainly found in the brain of the alien.  

4 0
3 years ago
Which term names catalysts that speed up chemical reactions in the human body?
Georgia [21]

Enzymes are catalysts that speed up chemical reactions in the human body.

<h3>What do you mean by Catalysts?</h3>

Catalysts may be defined as those substances that enhance the rate of chemical reactions without being consumed in them.

Enzymes are also considered as catalysts in the body of living organisms. Basically, enzymes are proteins that assist in the speeding up of any chemical reaction in living entities.

Therefore, enzymes are catalysts that speed up chemical reactions in the human body.

To learn more about Catalysts, refer to the link:

brainly.com/question/16781912

#SPJ4

4 0
3 years ago
If you examine 100 F₁ plants from the testcross and find that 44 have purple flowers with tall stems and 56 have purple flowers
tatuchka [14]

Answer:

PPTt

Explanation:

Let the gene for flower colour be denoted by P. P is the dominant allele and produces purple colour, p is the recessive allele and produces the recessive colour. Let the gene for stem height be denoted by T. T is the dominant allele and produces tall stem, t is the recessive allele and produces short stem.

A test cross was done which means that one of the parents was homozygous recessive for both the traits i.e. pptt

In the progeny all the flowers had purple colour which is only possible if the test parent was homozygous dominant for the trait i.e. it was PP

PP x pp :

    P    P

p  Pp  Pp

p  Pp  Pp

As evident, all the flowers will have Pp genotype and hence purple colour.

In the progeny, around half of the flowers had tall stems and half had short stems. This is only possible if the test parent was heterozygous for the trait i.e. it was Tt

Tt  X  tt :

   T    t

t  Tt   tt

t  Tt   tt

As evident, half plants have Tt genotype so they will have tall stems. Half of them have tt genotype hence will have short stems.

Hence, combining the genotype for two traits we obtain the genotype PPTt of the original test pea plant.

3 0
3 years ago
In disruptive selection, which individuals are selected against?
defon
Individuals with intermediate values of a trait rather than individuals with extreme values of a trait.
4 0
3 years ago
Other questions:
  • Name and describe two EPA regulations that are in place to protect public water systems
    11·1 answer
  • What 2 resources might 2 species compete with
    9·1 answer
  • If a car weighing 1500 kg and a truck weighing 4,000 kg are both traveling at 55 mph, which one will take more force to stop?
    9·2 answers
  • What is a community that has reached a stable stage of ecological succession called
    15·2 answers
  • Which is a basic method of cell-to-cell communication?
    9·1 answer
  • In humans, the process of digestion begins in the _____________ where food is ________________ into small pieces by the teeth. T
    6·1 answer
  • In the absence of oxygen, the pyruvic acid produced during
    5·2 answers
  • How many half-lives occur in 4 hours?<br> A. 1<br> B. 2<br> C. 3 <br> D. 4
    11·1 answer
  • Which substance provides energy to the cell to carry out active transport?
    12·2 answers
  • A white blood cell engulfing a bacterium is an example of blood functioning in __________.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!