sarahkeenihan

Day 186. Valentines Day

In february 2013 on February 14, 2013 at 9:48 pm

heart

If you studied science at school or Uni, you may have been talked through the different anatomical features and functions of a heart.

If not, here’s a quick run through:

Ventricle: a big pumping muscular chamber – the left one pumps to send oxygen-rich blood around your body; the right one pumps to send oxygen-poor blood to the lungs for an oxygen ‘refill’.

Atrium: a smaller chamber which acts like a receiving vessel before transferring blood on to the relevant ventricle; the left atrium receives oxygen-rich blood from the lungs, the right atrium receives oxygen-poor blood from the body.

Aorta: the main artery leaving the left ventricle, which later branches to form other arteries to deliver oxygen-rich blood around the body.

Inferior and superior vena cavae: the main veins which are the final vessels collecting oxygen-depleted blood from the veins around your body before delivery it to the right atrium.

Pulmonary trunk and arteries: carries oxgen-poor blood from the right ventricle to the lungs

Pulmonary veins: transfer oxygen-rich blood from the lungs to the left atrium

Happy Valentine’s Day.

[image from here]

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