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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 the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
![Mobilize the ankle using the heels of the hands. Place the heels of the hands just under the ankle ...](https://biology-forums.com/gallery/33/medium_380798_23_08_17_1_04_34_33082331.jpeg)
![Apply circular friction with the heels of the hands to tendons that cross the knee. Place heels of ...](https://biology-forums.com/gallery/33/medium_380798_23_08_17_7_05_47_333082450.jpeg)