|
|
Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.
In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.
The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.
Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.
![Otitis media. This illustration shows an inflamed tympanic cavity, which is the most common source o](https://biology-forums.com/gallery/47/medium_14755_14_10_12_6_37_46_94012321.jpeg)
![Herniated disk. A herniated disk is a protrusion of the disk’s gelatinous center, called the nucleus](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_28_47_10077486.jpeg)
![For ice massage, ice is frozen in a cylindrical container or a paper cup (A). The top half of the cu](https://biology-forums.com/gallery/47/medium_501194_15_04_16_8_31_57_234651769.jpeg)