|
|
Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.
People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.
Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
![Rhytidoplasty. This is a common form of plastic surgery in which the skin is pulled and sutured to d](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_10_36_100181200.jpeg)
![Candidates for jobs are sometimes rejected when the prospective employer finds negative images or ...](https://biology-forums.com/gallery/27/medium_660366_10_04_17_11_49_34_276441695.png)