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?
Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.
Did you know?
Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.
Decomposers (detritivores) feeding on dead plant and animal matter.
Burial caves from Mangaia, Cook Islands, document the changing patterns of mortuary ritual.
Sam Houston—and his horse—earned this heroic tribute. At the Battle of San Jacinto, a musket ball sh
This slave burial service, painted by John Antrobus in 1860, reflects an inversion of power relation
Purse cover, from the Sutton Hoo burial ship.
A whistle stop used to find top dead center. Remove the spark plug and install the whistle stop, ...