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MAXImum [283]
3 years ago
12

hyaline membrane disease of an infant is due to deficiency of surfactant and the source of pulmonary surfactant is​

Medicine
1 answer:
Natalka [10]3 years ago
4 0

Hyaline membrane disease is now commonly called respiratory distress syndrome (RDS). It is caused by a deficiency of a molecule called surfactant. RDS almost always occurs in newborns born before 37 weeks of gestation. The more premature the baby is, the greater is the chance of developing RDS

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There are infinite black and white dots on a plane. Prove that the distance between one black dot and one white dot is one unit.
Lubov Fominskaja [6]

Answer:

You don't, because it's false. If all black dots happen to be on the line y=0 and white dots on the line y=π (and the rest of the plane is neither white nor black), there is no such pair.

Now if each point of the plane were either black or white (and there were infinitely many of each type), that would be different. In fact, it is sufficient to have at least one of each color.

Why? Pick any two points A and B that have different colors. Starting at A , we can reach B using a finite number of steps, each of length exactly 1: just go directly towards B until the distance becomes less than 1, and at the end, if we didn't reach B exactly, we make two steps "to the side and back" to reach it. (Formally, if you are currently at C , imagine circles with radius 1 centered at B and C . Pick one of their two intersections, go from C to that intersection and from there to B .)

As the first and the last point on this path have opposite colors, there has to be a pair of consecutive points with opposite colors, q.e.d.

(Alternately, you could prove the new statement by contradiction. Pick any black point. All points in distance 1 from that point have to be black. This is the circle with radius 1. All points in distance 1 from those points have to be black as well. Here we can observe that the set of all points known to be black at this moment is the entire disc of radius 2 centered where we started. Continuing this argument, we can now grow the black disc indefinitely and thus prove that the entire plane has to be black, which is the contradiction we seek. Of course, this is basically the same proof as above, just seen from a different point of view.)

This will help you❤️

4 0
3 years ago
A person exercising in hot, humid weather who experiences nausea, dizziness, dry skin without sweating, and shallow breathing li
Blizzard [7]

Answer:

a heat stroke

7 0
2 years ago
Which of the following best describes the function of the brain? A. It provides the body with direction one needs to walk. B. It
IgorLugansk [536]

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its c

Explanation:

got it right on edge 2020

8 0
3 years ago
Many factors contribute to the incontinence that is common among the elderly. A major factor is increased:
ASHA 777 [7]

Answer:

Weak pelvic floor muscles. Damage to nerves that control the bladder from diseases such as multiple sclerosis, diabetes, or Parkinson's disease. Blockage from an enlarged prostate in men. Diseases such as arthritis that may make it difficult to get to the bathroom in time.

Explanation:

5 0
2 years ago
Who was the first female doctor in the United States ,and who established an efficient system to train nurses
Dvinal [7]

Answer:

Elizabeth Blackwell

Explanation:

Elizabeth Blackwell was the first female doctor in the United States while Florence Nightingale established an efficient system to train nurses.

5 0
3 years ago
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