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Did you know?

About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

Did you know?

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.

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A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

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The average adult has about 21 square feet of skin.

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When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones
(a) In normal nerve conduction, sodium ions (Na+) enter the sodium channels along a neuron and ... (a) In normal nerve conduction, sodium ions (Na+) enter the sodium channels along a neuron and ...
The first step in hoisting a vehicle is to properly align the vehicle in the center of the stall. The first step in hoisting a vehicle is to properly align the vehicle in the center of the stall.
Testing motor function of cranial nerve VII - Frown Testing motor function of cranial nerve VII - Frown
Nerve Nerve
The X-inactivation center (XIC) The X-inactivation center (XIC)
Video: Neurosynapse Animation

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