why is your heart on the left side
In your lifetime your heart will beat around three billion times
and pump enough blood to fill 5,500 large swimming pools! Pretty good going, and luckily, unlike most of your muscles, your heart never gets tired. It works day and night to pump blood around your body. Even when you're resting, your heart works twice as hard as your leg muscles would if you started sprinting! Clench your fist, that's about the size of your heart. This is quite small for one of the most powerful muscles in your body. It is so powerful that it can squirt blood at a distance of 10 metres! Most people think their heart is on their left side of the body because it tips slightly to this side. In fact, it sits in the middle of the chest, just in between your lungs. Your left lung is actually a bit smaller to make room for your heart. Your heart has to work hard because it carries oxygen in the red blood cells all over your body. Its design is very clear. Blood needs to be pumped to the lungs before it can make its way around the body, but by the time the blood has gone through the lungs it has lost a lot of pressure. So the heart is made of two pumps. The right side pumps the blood to the lungs to get oxygen. Then the left side gets the oxygenated blood and pumps it all round the body. Both sides of the heart have an atrium and a ventricle. When the blood arrives at the heart it goes into atrium. It the gets pushed through a valve into the ventricle. Then the stronger muscles around the ventricles push the blood back out of the heart. It is these two pushes which make the distinctive da-dum of your heart beat. The second push is more powerful and this is why it gets louder. The wall of the left ventricle is much thicker, because the muscle has to push the blood a lot further. The veins and arteries which connect to the heart are also different. The aorta is the artery which takes the blood away from the heart to the rest of the body. It is the biggest artery in the body, and its diameter is about the same size of a garden hosepipe!
Our hearts normally beat 72 times a minute - that's quite a lot when you think about it. Compared to this a blue whale's heart only beats 6 times a minute, and a Hummingbird's heart can beat around 1000 times a minute. But a Hummingbird's heart is only the size of a grain of rice; the heart of the Blue Whale is the same size as a car! And if you ever thought your dog loves you more than anyone else maybe it's because they have the largest heart to size ratio. This means they have the biggest heart of any animal relative to its size. Doctor Who is an alien who has more than one heart, that's just sci-fi isn't it? Well there are actually some creatures a little closer to home that also have more than one heart. Octopuses and squid have three hearts! They have two hearts which pump blood to the gills. The third heart pumps blood to the rest of the body. There are actually some humans who have more than one heart. But they weren't born with them. It is called a piggyback heart and it is a type of heart transplant. It is used for patients with cardiomyopathy, which can make the heart grow to twice the size it should be; the heart could then stop working. But instead of replacing the heart with a donor heart, they just disconnect some of it and hook up the new heart right next to it. So the new heart takes over most of the pumping and the old heart carries on working but with reduced pressure. In 2005 there was a major breakthrough in the field when Hannah Clark had the operation reversed! She was given the second heart as a baby but 10 years later her body rejected it. Because her old heart had been resting all this time it was able to function properly again so doctors hooked up her old heart and it began beating all by itself again. Follow the link to find out more about Hannah and her amazing story: Everyone knows that human beings require a certain amount of sleep each night.
According to most experts, 8 hours is the recommended amount of sleep that we should all get but some can get by with less and some definitely need more. While sleep duration is extremely important, sleep position is equally as important. Recent studies have shown that sleeping on the left side of your body will result in a better nightвs rest as well as other health benefits. According to an ancient Indian science known as Ayurveda, sleeping on the left side of the body has a number of positive benefits that are hard to ignore. In fact, there are several. However, we are going to focus on the 6 most important reasons that you should start sleeping on the left side of your body. 6. Improves Digestion Since the stomach is located on the left side of the body, sleeping on the left allows waste to travel easily from the intestines to the colon. Lying on the right side makes the digestive process a bit more difficult simply due to gravity. Itвs also believed that pancreatic enzymes are developed more easily while lying on the left side of the body. Furthermore, sleeping on the left promotes a bowel movement in the morning. 5. Better for your heart. Sleeping on your left side has been shown to improve circulation to the heart. Likewise, it takes pressure off the heart and allows gravity to work instead. Note, however, that there is some debate over this. 4. Boosts Brain Activity and Lymphatic System Ancient Indian science states that sleeping on the left side of the body allows lymph fluids to be filtered easier. Since the dominant lymphatic node is located on the left side of the human body, waste is processed easier. Again, this is largely due to gravity. Aside from making things easier for the lymphatic system, sleeping on the left side has been shown to aid the removal of brain waste thus improving activity during waking hours. 3. Helps Reduce Heartburn Foods that are acidic such as pizza, pasta, and even coffee can trigger heartburn.
Anyone who has tried to sleep while suffering from heartburn will tell you how uncomfortable that experience can be. However, sleeping on the left side of the body has been shown to calm acid reflux. Since the stomach is positioned on the left side of the body, sleeping on the left allows gravity to do its work. Itвs also believed that heartburn and indigestion will increase when sleeping on the right side. 2. Relieves Back Pain People who are suffering from a sore back sometimes have no choice but to sleep on their side. Sleeping on your stomach can cause more pressure to build up in your back. So, side sleeping is really the only option here. However, sleeping on the left side relieves pressure from the spine and stomach. Pressure is also relieved from the back as well. Proper sleep is required for sore or injured muscles to heal properly. Sleeping on the left side will allow you to get a proper nightвs rest. It will also ease the tension off of your back. 1. Promotes A Better Nightвs Rest For Pregnant Women For decades, doctors have instructed pregnant women to avoid sleeping on the right side of their bodies. Instead, pregnant women should sleep on the left side for a number of different reasons. First of all, it relieves back pain and allows blood to flow easily to the fetus. Furthermore, sleeping on the left side relieves pressure from the uterus and liver as well. Blood circulation is improved throughout the body overall. Although western medicine deems this is a controversial theory, the ancient science of Ayurveda states otherwise. With that being said, there are clear facts to back up the theory. The location of various systems within our bodies shows that the left side is far superior to allow the body to rest and not take on extra work during sleeping hours. Several of the other benefits of sleeping on the left side are hard to deny as well.
- Views: 159
why the heart rate increases during exercise
why does your left arm hurt during a heart attack
why does your body temperature increase when you exercise
why does the heart have 4 chambers
why does breathing rate increase after exercise