Overview Rash from poison ivy. Many people develop an itchy rash that causes lines or streaks that look like this. Poison ivy, oak and sumac: Overview Many people get a rash from poison ivy, poison oak, and poison sumac. This rash is caused by an oil found in the plants. This oil is called urushiol (you-ROO-shee-all).
Cells in heart muscle process a lot of energy, so they have a large number of mitochondrion, the part of the cells where energy is made. Like all living things, cells die. The number of cells that an adult male loses per minute is roughly 96 million.
1 There are 2.4 Trillion red blood cells in one pint of blood. 2  The human body manufactures 17 million red blood cells per second. 3  If stress precipitates a need the body can produce up to 7 times that amount. ( 4 Thatâs up to 119 million red blood cells per second.). 5  A red blood cell is around 7 microns in size.