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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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Your heart beats over 36 million times a year.

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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

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Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

Although Neandertal brain sizes fall well within the modern human range, their EQ is lower than mode Although Neandertal brain sizes fall well within the modern human range, their EQ is lower than mode
Two language centers of the brain Two language centers of the brain
The meninges of the brain and spinal cord. The meninges of the brain and spinal cord.
Functional brain imaging is the major method of cognitive neuroscience. This image—taken from the ... Functional brain imaging is the major method of cognitive neuroscience. This image—taken from the ...
Some of the visual areas that have been identified in the human brain. Some of the visual areas that have been identified in the human brain.
A View of the Left Side of the Brain A View of the Left Side of the Brain
Video: Egg and Sperm Formations in Animals Animation

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