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In 1864, the first barbiturate (barbituric acid) was synthesized.

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The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

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If all the neurons in the human body were lined up, they would stretch more than 600 miles.

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The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

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Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Congenital abnormalities of the spine. A. Meningocele. B. Meningomyelocele. Congenital abnormalities of the spine. A. Meningocele. B. Meningomyelocele.
Greatly enlarged cervical lymph nodes due to Hodgkin’s lymphoma. Greatly enlarged cervical lymph nodes due to Hodgkin’s lymphoma.
Shingles effleurage with hands parallel to the spine and to the direction of movement. Shingles effleurage with hands parallel to the spine and to the direction of movement.
Cross-arm stretch of cervical muscles with neck in forward flexion. Cross-arm stretch of cervical muscles with neck in forward flexion.
Stretch the cervical muscles with neck in lateral flexion. Place one hand on the shoulder and the ... Stretch the cervical muscles with neck in lateral flexion. Place one hand on the shoulder and the ...
Sagittal M R I of the Cervical Spine Sagittal M R I of the Cervical Spine
Video: What are Taste Receptors? How Does it Work? Animation

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