Asthma- A condition in which a person's airways become inflamed, narrow and swell, and produce extra mucus, which makes it difficult to breathe.
Asthma attack- Called an asthma exacerbation, the airways become swollen and inflamed. The muscles around the airways contract and the airways produce extra mucus, causing the breathing (bronchial) tubes to narrow.
During an attack, you may cough, wheeze and have trouble breathing. Symptoms of a minor asthma attack get better with prompt home treatment. A severe asthma attack that doesn't improve with home treatment can become a life-threatening emergency.
False the proper amount of physical activity is to exercise at least 30 minutes a day everyday
Is this for health i think the answer would be self confidence
Given what we know about visual acuity measurements we can confirm that a score of 20/15 will indicate that<u> the patient has </u><u>better </u><u>than </u><u>normal vision</u><u>.</u>
Visual acuity is most often measured using a chart known as a Snellen chart. The goal of this is to place the patient at a distance of 20 feet and see how many lines in the chart he or she is able to accurately identify. Though this method is becoming less common due to advances in technology, the dual number measurement system drives from these tests.
The numbers in the score indicate the size of the letters and the distance at which the patient can see them. Though 20/20 is considered the <em><u>optimal normal vision score</u></em>, a score of 20/15 will actually indicate even better vision. This score indicates that at 20 feet, this individual can see <u>smaller letters</u> than the normal person.
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