Trace the pathway a creatinine molecule takes from a glomerulus to the urethra. Name every microscopic or gross structure it passes through on its journey.

Video transcript

Hi, everybody. Let's look at our next question. It says which of the following options gives the names of structures involved in the passage of urine after the collecting ducts. A glomeruli, Bowman's capsule, proximal convoluted tubule, B loop of Henley, distal convoluted tubule, collecting duct c, renal paola, renal pelvis, ureter or D ureter, urinary bladder, urethra. When we look at choice, a all of those structures occur before uh we've got before the collecting ducts. Glomus Bowman's capsule and proximal proximal convoluted tubule. So choice A is not our correct answer because we're talking about what happens to urine after the con collecting ducts. And that the same for choice B. Also all of those structures occur before the collecting ducts. Choice C renal paola, renal pelvis. And is a correct description of those structures. Urine passes from the collecting ducts into the renal paola, which is the tip of the renal pyramid that it passes through. Then the renal pelvis is the collecting reservoir sort of funnel shaped for urine. And then finally, from the renal pelvis, it goes into the ureter, which is that muscular tube that carries the urine from the collecting ducks or I should say from the kidney, since we know there's the two other structures there, first, from the kidney to the bladder. When we look at choice d ator urinary bladder and urethra, urethra, we know that all of those things do occur after the collecting ducts, we had ureter finishing up our choice c but they're not, our question says, how does the urine pass immediately after the collecting duct? And as we know the renal paola and renal pelvis come before the ureter. So there's a gap there compared to what our question is asking us for. So that's why choice D is not correct. So it's not immediately after the collecting duct. So that makes choice C the better answer since it deals with the structures immediately after. So the name of the structures involved in the passage of urine after the collecting ducks, it goes through choice C renal paola, renal pelvis and then Ureter see you in the next video.