Answer:
I think that the answer is A
Explanation:
This is because if stress can lead to pimples and bumps. Then it can probably lead to more.But still I am making a guess. Do not hold me accoutable for your grade.
Answer:
Gas exchange is crucial to sustain life because it rids the body of carbon dioxide and provides oxygen to the body.
Explanation:
Gas exchange in living beings is a mechanism that involves the incorporation of oxygen (O₂) into the organism and the elimination of carbon dioxide (CO₂). This exchange takes place in the pulmonary alveolus and in cells and tissues.
- <em><u>During respiration, the inspired air - loaded with O₂ - is exchanged with the CO₂ contained in the blood, taking advantage of the former and eliminating the latter during expiration</u></em><em>.
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- <em>When the oxygenated blood is taken to the tissues, O₂ is passed to the cells, which are deprived of the CO₂ produced by metabolism.
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The reason why gas exchange is crucial for the sustain of life is because it is the mechanism that allows the entry of O₂ necessary for cellular functions, as well as providing a means of CO₂ elimination.
Answer: (Medical Xpress)—Asthma is a debilitating condition that kills 250,000 people around the world each year. People with asthma have hyperreactive airways and thickened lung walls obstructed with mucus. During an asthma attack, which could be fatal, airways constrict even further in the presence of a trigger, such as pollen, dust mites or a viral infection. Current asthma therapies treat asthma attacks as immune responses and focus on immune system suppression. However, a study by Dimitri Trankner of Howard Hughes Medical Institute in Virginia and his colleagues, published in the Proceedings of the National Academy of Sciences, shows that sensory neurons control bronchial hyperactivity.
Explanation:
