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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.

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Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

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Illicit drug use costs the United States approximately $181 billion every year.

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To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

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There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Back muscles Back muscles
Muscles of the abdomen. Muscles of the abdomen.
The Z lens, which was developed by Zaidel to study functional asymmetry in split-brain patients. It ... The Z lens, which was developed by Zaidel to study functional asymmetry in split-brain patients. It ...
One hand kneads the forearm muscles, while the other hand stabilizes the arm at the wrist. One hand kneads the forearm muscles, while the other hand stabilizes the arm at the wrist.
Standing at the side, apply circular friction along paraspinal muscles of the low back using ... Standing at the side, apply circular friction along paraspinal muscles of the low back using ...
Opposing muscles of the upper arm Opposing muscles of the upper arm
Video: Functional zones in a mitochondrion

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