Lets Get Pumping!

Today in PE everyone was required to measure there heart beat. The beat of your heart is a result of the pumping of blood. I get that but how is blood pumped?
 The heart is a fundamental muscle! The average heart beats 72 times per minute, and around 1,900 lbs. of blood is pumped each day. That's a lot of work on one muscle, so how does a muscle the size of two fists do all this work?
The heart is located between the lugs and behind the breast bone. Two-thirds of the heart lies to the left side of the midline of the body and about one-third to the right side. The heart appears as a cone shaped hollow mass. The heart is a double pump, and is made up of cardiac muscles. It pumps the blood throughout out the body by following a repeated rhythmic contraction pattern. Timing is extremely important.  

The Heart in Action 

Blood is pumped by the hearty in two different circuits. The first circuits in the systemic circuit and the second circuit is the pulmonary circuit. The system circuit starts at the left atrium and passes the mitral valve down into the left ventricle. The ventricle will contract after the atria have started relaxing by the closing of the atrioventricular valves, so blood does not back wash. Pressure will then become higher in the left ventricle allowing ventricular systole's second phase to begin. It begins by forcing blood through the aortic semilunar valve up into the aorta so blood may reach the rest of the tissue in the body. After this the ventricles will become relaxed and pressure is now higher in the aorta then it is within the ventricles and it will cause back flow of blood. During this blood will slowly return back into the left atrium by ventricular diastole second phase.
Blood will travel through arteries then to arterioles and lastly to capillaries so it can begin a gas exchange of oxygenated blood to the tissues to unoxygenated blood back to the heart.
The next step is the pulmonary circuit. The pulmonary circuit will return the deoxygenated blood into the right atrium and the superior vena cava down the tricuspid valve to the right ventricle and blood will be forced up into the pulmonary trunk.
 It will then travel towards the lungs, the ateries then arterioles and capillaries once again but this time the capillaries with run along aveoli which are air sac's of the lungs that control the gas exchange between our atmosphere's. Basically so as you breath out you are going to be releasing the carbon dioxide from the tissues that were collected from those veins and transported via the arteries . As you breath in, oxygen will be inhaled back into the aveoli and will now allow oxygenated blood to return it back into the pulmonary venules. To the pulmonary veins so it can return back to the heart so the process can begin again.
Although this is a very complicated process it occurs every day, if the heart makes one mistake then a patient may result into having a serious heart condition. If you have any questions please comment below!



If you have a question, I have answers! Comment them below! Stay Curious xD

Time

I love the concept of time, I love clocks and everything that has to do with planning down to the second. But do I really know what time is? What is time, and how can it be defined?

These are two pretty important questions since we use time everyday. How many times do you look at your clock? Time can be defined as a dimension in which events can be ordered from the past through the present and into the future. Or at least that is how wiki answers defines it. Time more specifically can be defined as the measure of duration of events and the intervals between them. So what does that mean? Well lets break it down to measuring time, I think that is fairly important!

The 24 hour day is a fundamental starting point for time. A day consist of the obvious period of sunlight followed by night. Our bodies actually rely on the days cycle because we have a cycle specifically through sleep. Each morning we wake up to a new day! We use clocks, one of my favorite things, to divide the day into small increments. We use calenders and planners to help us group these increments together into large and even massive increments.

The measurement of time is broken up into around 25 primary increments. We start out with 1 picosecond, which is one-trillionth of a second. This is about the shortest period of time we can measure. We then move up to 1 nanosecond, a billionth of a second. then 1 microsecond, a millionth of a second. A millisecond, one thousandth of a second. 1 centisecond, one-hundredth of a second. 1 decisencond, one- tenth of a second, which is actually a blink of an eye. To 1 second, the average heart beats 1 second. 1 second soon becomes 60 seconds, which measures to 1 minute. 60 minutes becomes 1 hour, and 8 hours is the typical workday of most Americans. 24 hours, is one day, and the time for planet Earth to rotate one time on its axis. 7 days is one week, and 40 days is the longest a person can survive without food! 365.24 days is one year, and is how long it takes Earth to complete one orbit around the sun. 10 years is a decade, and 75 years is the average life span for a human.  The list goes on and on!

So as you can see time is pretty important, it helps us keep track of pretty much everything!
If you have a question, I have answers! Comment them below! Stay Curious xD


<a href="http://www.bloglovin.com/blog/6623029/?claim=86btswhfgd3">Follow my blog with Bloglovin</a>

<a href="http://www.bloglovin.com/blog/7069141/?claim=cav6rc5pde7">Follow my blog with Bloglovin</a>