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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
The average adult has about 21 square feet of skin.
On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.
For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.
![The path of blood flow through the chambers of the left and right side of the heart, including the v](https://biology-forums.com/gallery/47/medium_14755_10_09_12_7_22_09_8519715.jpeg)
![An electrocardiogram (EKG) wave, a record of the electrical signal as it moves through the conductio](https://biology-forums.com/gallery/47/medium_14755_10_09_12_7_22_09_85211006.jpeg)