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
Law Incorporation [45]
3 years ago
11

It is estimated that every year more than 15 million babies are born too early. The lungs of these premature infants are often i

mmature and easily damaged. Premature births happen for a variety of reasons—some known and some unknown. Those that are known include infections and conditions such as diabetes and high blood pressure.
Scientists are researching what causes premature births, in an attempt to develop solutions to prevent them. Scientists are also working on the development of an artificial placenta. At the University of Michigan, five premature lambs were placed in artificial placentas and kept alive for weeks. During this time, each lamb’s blood was circulated through its artificial placenta.

Discuss how the development of an artificial placenta is an important step in the study of premature births.

Question 1: State how an artificial placenta would be of benefit to the lungs of premature infants.

Question 2: Explain why the lambs’ blood must be filtered as it circulates through the artificial placenta.

Question 3: State one reason why premature lambs were likely used as model organisms in this study rather than mice.
Biology
1 answer:
Triss [41]3 years ago
8 0

Answer:

The development of artificial placentas can be a solution that would allow the survival of premature babies, favoring the complete development of the organs -such as the lungs- that would allow their viability.

Explanation:

The main problem facing a premature newborn - before 30 weeks of gestation - is his inability to breathe, due to an immature respiratory system.

During pregnancy, the mother provides nutrients and oxygen to the fetus through the placenta and the umbilical cord, which in turn receives carbon dioxide and waste products that eliminates the future baby. At birth, the baby should be able to breathe and nourish itself.

Some circumstances can cause premature birth, with the consequences of a fragile baby who may not be able to breathe due to the immaturity of his lungs.

<h3>Question 1: State how an artificial placenta would be of benefit to the lungs of premature infants. </h3>

In the case of a newborn whose lungs are not suitable for breathing, an artificial placenta provides conditions similar to the maternal uterus that allow the complete development of the respiratory system, that is, the formation of the bronchial tubes, bronchioles, pulmonary alveoli, as well as the production of surfactant, a substance that prevents alveolar collapse during breathing.

Knowing that a premature baby cannot return to the mother's womb, it is proposed to extend the period of development by introducing the newborn in a device that simulates the conditions of the uterus and the placenta.

<h3>Question 2: Explain why the lambs’ blood must be filtered as it circulates through the artificial placenta. </h3>

In the artificial placenta, also called biobag, the umbilical cord of the lambs is connected to a gas exchange machine - similar to that of extracorporeal circulation - capable of providing blood, nutrients and oxygen, in addition to eliminating waste products and dioxide carbon

The liquid contained in the biobag has a composition similar to that of the amniotic fluid and provides nutrients to the lamb. External monitors connected to the lamb provide all the necessary information about the vital signs of the developing animal.

<h3>Question 3: State one reason why premature lambs were likely used as model organisms in this study rather than mice.</h3>

Lambs have been chosen as a model to perform studies of artificial placenta because their fetal development is very similar to that of humans although their maximum gestation time is shorter.

In lambs, full gestation lasts up to 22 weeks, and lung development occurs between weeks 15 and 17, while in the human fetus it occurs between weeks 21 and 26. However, the stages of development are quite similar.

Since so far only the use of artificial placentas has been achieved for a maximum of 30 days, the relative rapidity with which lung development occurs in lamb fetuses allows its study, and the results of tests in lambs can be extrapolated to the fetus Human in the future.

Learn more:

Authorization for animal research brainly.com/question/8226295

You might be interested in
In eukaryotes, the size of the primary transcript is generally ________ the gene in the template dna strand.
Hunter-Best [27]
Had to look for the options and here is my answer. 
Basically, when we say eukaryotes, these are kinds of organisms which consists of cells that has DNA and other organelles that are enclosed by a membrane. In this case, the size of the primary transcript is generally THE SAME LENGTH the gene in the template of the DNA strand. Hope this helps.
3 0
3 years ago
Which is the central element for all living things?
Tatiana [17]
The central element for all living things is carbon, which is why you might often hear the phrase "carbon-based" lifeforms. Another term is often "organic matter"
5 0
3 years ago
Read 2 more answers
What kind of bonds are found between the two strands of DNA, holding the bases together?
yKpoI14uk [10]

Answer: hydrogen bonds

Explanation:

8 0
2 years ago
Read 2 more answers
What is the start codon and its importance to the reading frame?
tia_tia [17]

Answer:

b.Time conversion from Universal Time Coordinated (+0) to Central Standard Time(-6). UTC to CST time zones converter, calculator, table and map.

7 0
3 years ago
Plz need help!!!!!!!!!
Georgia [21]

Answer:

really

Explanation:

7 0
2 years ago
Other questions:
  • Which type of rna brings the information in the genetic code from the nucleus to the ribosomes of the cell? *?
    13·1 answer
  • What is the difference between pollen and spores?
    6·2 answers
  • The rock cycle is not important to living organisms. Please select the best answer from the choices provided T F
    15·1 answer
  • Which of the following represents the correct format for the scientific name of an organism? Which of the following represents t
    13·1 answer
  • Why temperature above 30 have different effects on immobilized enzyme and enzyme in solution​
    15·1 answer
  • Which event occurs during interphase?
    10·1 answer
  • State three lifestyle rules to maintain health.
    11·1 answer
  • Eric and janelle are both carriers of the recessive allele causing tay-sachs disease, which is lethal in early childhood. if the
    8·1 answer
  • What can cause the eruption from a shield volcano to become explosive?
    12·1 answer
  • The wing of a penguin is ________ the arm of a human.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!