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The Ins and Outs of the Heart

When most peeps think of the word "heart" they think of love, romance and all that mushy stuff. Those things are great and all, but let's also give your heart props for what it really is - an amazingly powerful life-sustaining organ.

Pump Up the Oxygen

To put it simply, your heart is a pump. Much like that gizmo in your fish tank, your heart moves liquid from one place to another. In the process, the heart re-oxygenates the blood moving through it with the oxygen you breathe in. This is an essential process cuz your blood supplies oxygen to your entire body. If you don't get oxygen for more than a few minutes, you'll die.

Basic Anatomy

Your heart is a cone-shaped muscle in the middle of your chest, right between your lungs. The average adult heart weighs between 9 - 10.5 ounces (255 - 298 grams) and it pumps about 1,900 gallons (7,200 liters) of blood every day. The heart has three layers: the endocardium (outside layer), the myocardium (middle layer) and the pericardium (the fluid sack that surrounds the heart). The heart is also divided up into four chambers, which each have a valve that allows blood to flow in, but prevents blood from flowing backwards.

In Action

The heart squeezes blood out and into the rest of the circulatory system when it contracts. When it expands, it sucks in poorly oxygenated blood and pushes through the chambers and into the pulmonary artery, where it is re-oxygenated. Then the blood makes its way out of the heart via the aorta and back into the body where it provides your cells with oxygen.

Did U Know?

  • In the average person's life, their heart will beat 2.5 billion times.
  • Heart disease is the leading cause of death in North America. More than 2,000 Americans die from heart disease everyday.
  • Your heart is about the size of your fist.
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Poll

What Causes Heart Disease?

  • Genetics.
  • Eating too many high-fat foods.
  • Smoking.
  • All of the above.

General In The Forums

snoopynwoodstock123
oh wOW. THANKS ROSE. YOU'RE SUCH A NICE FRIEND. I'll make sure my oc is unbearable to read now...
reply about 2 hours
Taidoku
Taidoku posted in Debating:
Absolutely, otherwise no one would bother with posting pics. Also everyone agrees I got the best profile pic in the world
reply about 3 hours
rainbowpoptart
"AlphaT" wrote:And you are the last person I'd have thought would come up with such an interesting dilemma. Good work. I'm not entirely sure if I'm supposed to be offended by that or not. "AlphaT" wrote:I wasn't making a serious statement. I was referring to how my boundless charisma is enough for people to want to know me, without having to resort to my dashing good looks.  Right, right, because your charm is already more than enough to have the ladies wanting you and the gentlemen wanting to be you. Throwing your gorgeous face into the mix would only make it even worse.
reply about 4 hours
Fun_125
Fun_125 posted in Random:
IN JAILTori_With_Sporks: IMMA SHANK YOU NEMO!!Flawless_Hair: NOT MY HAIR!!Tori_With_Sporks: IMMA SHANK THAT HAIR BOIFlawless_Hair: NUUUTori_With_Sporks: What are you in here for?Flawless_Hair: I killed GabbyTori_With_ Sporks: YO BOI WHY WOULD YOU DO THAT??Flawless_Hair: IM SORRY!! not
reply about 5 hours
AlphaT
AlphaT posted in Debating:
"rainbowpoptart" wrote: "AlphaT" wrote: "rainbowpoptart" wrote: "AlphaT" wrote: Not if you have a great personality. So do people judge you by your profile picture because you have a bad personality or because they disregard your great personality and assume you're a bad person because you support Trump? Definitely the second.  Meaning your initial statement isn't entirely correct. There are indeed people who will or will not want to befriend you for your personality instead of for whatever your picture is, yes. But if someone doesn't know much about you as a person or is just too ignorant to care about your personality, then they're gonna judge you solely by that picture. You're genuinely one of the very last people I'd have thought would ever make such a weak point and contradict themselves like that, bud. And you are the last person I'd have thought would come up with such an interesting dilemma. Good work. I wasn't making a serious statement. I was referring to how my boundless charisma is enough for people to want to know me, without having to resort to my dashing good looks. 
reply about 5 hours