00:01
So here we are addressing what would actively transport.
00:07
That's actively transport, which means it uses energy, solutes into the lumen of an excretory organ.
00:30
Okay, not the bloodstream.
00:32
Okay, just make sure we keep that clear, not a blood vessel, the lumen of an excretory organ, not the bloodstream.
00:52
Okay, so let's look at these steps.
00:55
Well, first of all, you can see that excretion, this here is a big description.
01:03
Excretion is just the removal of wastes from the body.
01:23
So that's not a lumen, that's not a small thing.
01:26
That is the overall topic we are discussing here, excretion, removal of waste from the body.
01:33
Now the other three things we have here, filtration, reabsorption and excretion, all have to do with the formation of urine of some kind, the removal of, you know, waste from our body.
01:58
The process of excretion will make us form this urine.
02:02
Now, filtration is exactly what it sounds like.
02:06
Blood is filtered...