Friday, September 6, 2013

Know your heart

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Heart is an amazing organ, very little in size buy very big and important when it comes to the functions. Khan academy has bunch of videos about heart titled Meet the Heart. I highly recommend it. Our body has lot of pairs like left & right hands, eyes, ears & so on. It gets confusing when we start naming them in Latin. Here are some tricks to remember them.

Systole & Diastole

Systole: Wikipedia defines it as “contraction of the heart”.

Diastole: Wikipedia defines it as “is the period of time when the heart refills with blood after systole”.

How to remember it? These two words represent contraction and expansion of the heart in a heartbeat. Remember the word dilation[expansion] when you hear diastole.

Systole: Contraction

Diastole: Dilation

Artery & Vein

The other two confusing pair. Vein takes the blood to heart & Artery takes the blood away from heart.

Vein: In, Brings in blood to the heart.

Artery: Away. Takes blood away from the heart.

Atrium & Ventricle

Heart has four chambers, they can be referred as upper & lower chambers or right and left chambers.

Righty tighty, lefty loosey

Right side chambers collects impure blood and left side chambers pumps away the pure blood. Remember the phrase, Righty tighty, lefty loosey.

Right side collects the impure blood

Left side drains the blood.

Up & down

Upper two chamber are called atriums and lower chambers are called ventricles. Upper chambers usually collects the blood or blood flows into upper chambers. Lower chambers flushes blood away from heart.

Atrium is the word that refers a larger open space within a building usually with a glass roof according to Wiki.

Venter is the origin word for ventricle which means belly. Chambers that are closer to belly are ventricles.

Atrium: Upper two chambers.

Ventricle: Lower two chambers or chambers by belly[venter].

Pulmonic[3] & Aortic[3] valves

These two valves are lower chamber or ventricle valves. They two control the outflow of blood from heart. Pulmo or pulmon is the root word for pulmonic which means lung. It controls the flow of the blood from right ventricle to lungs. That’s why its called Pulmonic Valve. Aortic Valve controls the flow of oxygenated/pure blood to the rest of body through “Aorta”.

Tricuspid[3] & Mitral[2] Valve

These two valves are upper chamber valves and they control the inflow of blood to heart. Among all the four valves, Mitral valve is the only valve that has two cusps. It is also called bicuspid valve.