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?
On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
Did you know?
More than 4.4billion prescriptions were dispensed within the United States in 2016.
Did you know?
In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.
Did you know?
Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).
The life cycle of a typical fern.
Not You're Typical Apple
Structure of a typical neuron.
A typical lubrication system, showing the oil pan, oil pump, oil filter, and oil passages.
A typical accelerator pedal position (APP) sensor, showing two different output voltage signals ...
Poor ventilation of oceans