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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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Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

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Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

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The FDA recognizes 118 routes of administration.

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Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

A comparison of (a) uniform, cup-shaped, normal erythrocytes A comparison of (a) uniform, cup-shaped, normal erythrocytes
EEG recordings showing the differences between normal, absence seizure, and generalized tonic–clonic EEG recordings showing the differences between normal, absence seizure, and generalized tonic–clonic
Weak valve springs will produce a normal reading at idle, but as engine speed increases, the needle ... Weak valve springs will produce a normal reading at idle, but as engine speed increases, the needle ...
Diagram of the heart showing normal conduction pathway. Diagram of the heart showing normal conduction pathway.
A Breathalyzer is used to measure a person's blood alcohol concentration (BAC) A Breathalyzer is used to measure a person's blood alcohol concentration (BAC)
The obese (ob) mouse mutant, shown on the left (a normal mouse is on the right), has provided many c The obese (ob) mouse mutant, shown on the left (a normal mouse is on the right), has provided many c
Video: Forming urine ( influencing factors), Forming dilute urine & Forming concentrated urine

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