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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.
Did you know?
The human body produces and destroys 15 million blood cells every second.
Did you know?
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
There are more sensory neurons in the tongue than in any other part of the body.