|
|
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.
Blood is approximately twice as thick as water because of the cells and other components found in it.
![Cirrhosis. Cirrhosis is characterized by a chronic deterioration of the liver, replacing healthy cel](https://biology-forums.com/gallery/47/medium_14755_26_10_12_5_22_59_9681152.jpeg)
![National Guardsmen firing into a crowd of antiwar protesters at Kent State University killed four ...](https://biology-forums.com/gallery/47/medium_617724_05_12_16_5_58_24_242161233.jpeg)