The normal body temperature is 98.6 degrees Fahrenheit give or take a few decimals. 100 degrees is said to be the temperature when an adult has a fever.

The small intestines are longer than most would think since they're coiled within the body. On average, the small intestines are approximately 25 feet long.

Adults have 32 teeth that they are capable of growing. This includes the 4 wisdom teeth at the back of the mouth.

There are five senses that a human can have. They are: sight, smell, hearing, touch, and taste.

On average, humans are born with 23 pairs of chromosomes. One of those pairs determines the sex of the baby. Each person automatically has an X chromosome. If they have an additional X, they are born a female and if they have a Y chromosome, they are born a male.

Most people think their heart is located to the far left of the chest, normally where one places their hands for a pledge. The heart is actually located in the center of the chest – just slightly to the left.

While AB is known as the universal receiver, O is the universal donor. This means that someone with blood type O can give blood to anyone.

Did you know that most humans can’t breathe and swallow at the same time? As for babies, their body anatomy allows for them to accomplish this feat for the first few months of their lives.

The cornea is the only part of the body that has no blood supply. Not only is it the fastest healing tissue in the human body, but it gets its oxygen directly from the air.

The pancreas is an important organ that helps regulate blood sugar and secretes hormones. While it is mostly part of the digestive system, it can be thought to be part of the endocrine system as well.