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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.
Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.
There are 20 feet of blood vessels in each square inch of human skin.
The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
![Effleurage over sternum. Apply with the palm of the hand between breast tissue. Omit this technique ...](https://biology-forums.com/gallery/33/medium_380798_23_08_17_1_14_05_3310027.jpeg)
![Apply effleurage to face with palms. Place the hands gently on the face with fingertips at the jaw. ...](https://biology-forums.com/gallery/33/medium_380798_23_08_17_1_47_40_331172292.jpeg)