The answer is going to be 90%.
The venous system is low pressure using either gravity from the upper body or muscle action from the lower body (when we sit/stand). It does have a little pressure naturally. So a cut oozes blood unless you hit an artery. That is high pressure blood carrying oxygen to tissues.
Answer: The correct answer to the question is option D
"Use your inhalers every day as directed even if symptoms are not present."
Explanation: Chronic Obstructive pulmonary disease (COPD) is characterised by a decrease in oxygen and increase in carbon dioxide so hypoxemia ( a low level of oxygen in the blood) and hypocapnia (abnormally elevated carbondioxide (CO2) level in the blood) are expected.
Inhalers used in COPD can contain either a single medication or a combination of ingredients. Bronchodilators open the airways, while glucocorticoids reduce inflammation.
Daily use of inhalers even when symptoms are not present helps reduce airway constriction so air can pass into your lungs more effectively as you breathe.
A person with COPD may also be instructed to use inhaler at scheduled times throughout the day and/or to also use an inhaler when there is a COPD exacerbation(sudden worsening of the COPD symptoms).
Can you write that in english please??????
<span>Tobacco users contribute to an overall loss of productivity(by taking extra break, being less fit and falling sick)because When tobacco smokers fall sick, the whole society has to pay for this: they would be treated by the heath system, which is financed by the contributions by the whole society, not only smokers</span>
