00:01
So what is apoptosis? well, first of all, apoptosis may be the result of cell signaling, but it's not cell signaling.
00:23
It is not anything involved in cell signaling.
00:33
A cell may begin as poptosis because it received certain signals and often does under some conditions we'll talk about in a second, but apoptosis is not involved in cell signaling, so that is that.
00:49
It also is not cell movement, so it is not migration.
01:02
So what is apoptosis about? apoptosis gets rid of cells.
01:20
It is called pre -programmed cell death, or some people actually like to call it cell suicide.
01:52
So why would you want cells to die? well, we do want to get rid of cells sometimes if cells are, when cells are worn out, or are malfunctioning.
02:16
Or it's one way to control if you have too many cells.
02:25
We don't like that because that is cancer on controlled cell division.
02:31
Where we will see it commonly and if you think about it is embryonic development.
02:48
If you think about discovery channel or any sort of nova films that you've seen human embryos inside, you look at their hands and the hands are all joined together.
03:02
They look like they're wearing mittens...