The lungs are among the largest organs in the human body. These muscular air sacs are located within the chest. When air is brought into the lungs, the body takes in oxygen and removes carbon dioxide from the blood. The heart then pumps the oxygenated blood to the body... Read more
The rectus abdominis muscle, commonly referred to as the abs, are often viewed as a gauge of physical fitness. If the abdominal muscles are visible on the outside of the body, it means that the muscles themselves are toned and that the body does not harbor an excess of fat... Read more
The cross or crucifix has been a common religious symbol for millennia. Though most consider it an icon of Jesus and Christianity, it was also used in pre-Christian times... Read more
Stairs go by many names. Depending on where you are from, you may refer to them as a stairwell, a staircase, a stairway, or a flight of stairs... Read more
Many modern artforms strive for a three-dimensional appearance. What does it mean to be 3D? An image is considered 3D when it appears to have depth - just as we view truly three-dimensional objects in... Read more
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... Read more