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Did you know?

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.

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Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

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By definition, when a medication is administered intravenously, its bioavailability is 100%.

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As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Negative feedback control of a regulated variable. Negative feedback control of a regulated variable.
Many fuel-control oxygen sensors are located in the exhaust manifold near its outlet so that the ... Many fuel-control oxygen sensors are located in the exhaust manifold near its outlet so that the ...
In situ hybridization. This color-coded frontal section through a rat brain reveals high ... In situ hybridization. This color-coded frontal section through a rat brain reveals high ...
Control you knife with one hand and hold the item being cut with the other (2 of 3) Control you knife with one hand and hold the item being cut with the other (2 of 3)
Control of Hormone Secretion Control of Hormone Secretion
Antisense RNA control of the expression of IS10 transposase Antisense RNA control of the expression of IS10 transposase
Video: Wound Care

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