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Your heart beats over 36 million times a year.
About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.
A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.
The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.
The human body produces and destroys 15 million blood cells every second.
![The thorax of apes, including humans, is broad but shallow in contrast to the narrower, deeper chest](https://biology-forums.com/gallery/47/medium_274477_04_02_15_12_29_07_20601601.jpeg)
![Fractures are diagnosed based on an X-ray of the broken bone. Shown here: a comminuted fracture of ...](https://biology-forums.com/gallery/47/medium_665046_01_03_17_7_51_38_261821485.jpeg)