Your heart is a hard working muscle. If it takes you one minute to read this paragraph, your heart will have accomplished around 72 beats. Today, it will beat about 100,000 times. During your lifetime, your heart will beat over two billion times.
And you're not alone. Almost all animals have a heart. Mammals and birds have four chambered hearts like ours, while the heart of a spider is a simple tube. Interestingly, scientists have discovered that resting pulse correlates to average lifespan. For example, small animals like mice and hummingbirds have rapid heart rates, and may live for only a few months. The hearts of whales, on the other hand, may beat only a few times per minute. They outlive us by hundreds of years.
To take care of your heart, researchers recommend getting plenty of exercise, adequate sleep, and a healthy diet. How much exercise do you need? At least 30 minutes a day, or three and a half hours per week.
Would you like to draw a human heart? This detailed sketch will even allow you to identify the anatomy of the heart. All you will need is a pencil, a sheet of paper, and a good eraser. You may also wish to shade your finished drawing.
Watch 'How to Draw a Human Heart' Video Tutorial
Step by Step Instructions for Drawing a Human Heart
1. Begin by sketching a rounded, lumpy, irregular figure. It should look a bit like the shape of Africa. This outlines the lower chamber of the heart, which includes both the left and right ventricles..
2. Next you will draw the aortic arch. Extend two curved lines upwards from the irregular shape. The lines should follow a roughly parallel path, with the lower line being slightly shorter. Connect the lines at the end using a short curved line.
3. Next, you will draw the pulmonary trunk, as well as the left and right pulmonary arteries. Draw a short wavy line within the original figure, then it extend it up to meet the aortic arch. On the other side, extend a long curved line, ending at a small oval. Connect this oval to the aortic arch using a curved line that crosses over the end of the arch.
4. Erase guide lines from the heart.
5. Next, draw the right atrium and the superior vena cava. For the atrium, enclose an irregular form at the junction of the ventricle and the aortic arch. Above this, draw a narrow vertical oval along the arch, and connect this to the atrium using a curved line. This is the superior vena cava.
6. Using a series of curved lines, draw the left coronary artery crossing the ventricle. This artery should resemble the branching of a tree, with the lines getting progressively shorter and ending in points. Erase guide lines as necessary.
7. Draw major arteries extending from the aortic arch. Ror each, extend sets of parallel curved lines, and connect them at the top. Cause one to branch using a "V" shaped line.
8.Draw the left atrium and pulmonary veins. Enclose an irregular shape for the atrium. Extend a curved line upwards from this, and then draw the veins using pairs of parallel, curved lines. Connect them at the ends using curved lines or ovals.
9. Detail and texture the heart using short lines. Allow some to branch, indicating veins.
10. In scientific drawings, portions of the heart carrying oxygenated blood are typically depicted in red, while those carrying blood to the lungs for re-oxygenation are shaded purple or blue.
Want to draw the other kind of heart - you know, the symbol of love? Check out all of our heart drawing tutorials.