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Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

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When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

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Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Local/long distance cell Signaling Local/long distance cell Signaling
The upper intake manifold, often called a plenum, attaches to the lower intake manifold. The upper intake manifold, often called a plenum, attaches to the lower intake manifold.
Sickle-cell hemoglobin Sickle-cell hemoglobin
Cell surface recognition factors Cell surface recognition factors
Processing, sorting, and transport of proteins synthesized in a human cell Processing, sorting, and transport of proteins synthesized in a human cell
Depiction of cell transformations in isotonic, hypertonic, and hypotonic solutions Depiction of cell transformations in isotonic, hypertonic, and hypotonic solutions
Video: Ventilation - phases and driving forces

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