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There are more sensory neurons in the tongue than in any other part of the body.
Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).
Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.
A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
![Some thermostats are an integral part of the housing. This thermostat and radiator hose housing is ...](https://biology-forums.com/gallery/29/medium_548020_29_05_17_11_12_32_295641014.jpeg)
![Note the discovery as the air filter housing was opened during service on a Pontiac Bonneville. The ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_2_42_23_29619489.png)