How does alcohol affect your heart?
Alcohol puts stress on the heart to work harder to supply oxygen to the system and it constricts the way the oxygen is supplied. Research has shown that heavy, long term drinking damages your heart by weakening your heart muscle and causing a condition known as alcoholic cardiomyopathy. Some don't realize that drinking a large amount when you are not used to drinking can be just as dangerous. Excess quantities in the short and long term will damage your heart so limitations need to be set. The research has also shown that a lower risk of developing heart disease is based on moderate drinking; no more than two drinks per day for men and one drink per day for woman.
Friday, April 26, 2013
Wednesday, April 3, 2013
Vital Capacity
1. How does your vital capacity compare to others in the class? Describe some reasons why you think your vital capacity is what it is. Why are the highest and lowest vital capacities the way they are?
Brianna and Ashpreet both had a vital capacity of 2.4 while Kamalvir had 1.6. My vital capacity was 3.2. Some reasons why I think my vital capacity is what it is, is because I took a deep breath and then blew out. The highest and lowest capacities are the way they are is because it differs between gender, height, and weight.
2. How much air is in a usual breath? Why are our breaths the volume that they are?
In a usual breath there are 5ooml of air or half a litre Our breaths are the volume they are because our lungs adapt to how much air we need on a daily basis.
3. How is the mechanism of exhaling forcefully different than a usual exhalation? Why would practice at this via exercise/instrument playing/singing make you better at it?
The mechanism of exhaling uses more force because we are using more muscles blowing the air out of our bodies. During forced exhalation, as when blowing out a candle, expiratory muscles including the abdominal muscles and internal intercostal muscles generate abdominal and thoracic pressure, which forces air out of the lungs. Practice at this via exercise/instrument playing/singing because you can manage and control your breathing more.
Brianna and Ashpreet both had a vital capacity of 2.4 while Kamalvir had 1.6. My vital capacity was 3.2. Some reasons why I think my vital capacity is what it is, is because I took a deep breath and then blew out. The highest and lowest capacities are the way they are is because it differs between gender, height, and weight.
2. How much air is in a usual breath? Why are our breaths the volume that they are?
In a usual breath there are 5ooml of air or half a litre Our breaths are the volume they are because our lungs adapt to how much air we need on a daily basis.
3. How is the mechanism of exhaling forcefully different than a usual exhalation? Why would practice at this via exercise/instrument playing/singing make you better at it?
The mechanism of exhaling uses more force because we are using more muscles blowing the air out of our bodies. During forced exhalation, as when blowing out a candle, expiratory muscles including the abdominal muscles and internal intercostal muscles generate abdominal and thoracic pressure, which forces air out of the lungs. Practice at this via exercise/instrument playing/singing because you can manage and control your breathing more.
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