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Would this be deemed an acceptable answer for an ocr exam style answer to the question: Describe and explain what happens to blood plasma at the arterial end of the capillary.
Answer: Blood plasma move out the capillary and forms tissue while plasma proteins and red blood cells which cannot pass through the capillary wall remain in the capillary. Blood plasma moves out the capillary because the hydrostatic pressure is greater than the osmotic pressure so the fluid move down the pressure gradient. The osmotic pressure is caused by the capillary blood having a lower water potential dues to solutes like plasma proteins being in it so fluid move down the water potential gradient. However the effect of the hydrostatic pressure is greater than the osmotic pressure so overall fluid leaves.
Original post by ElectronDonor
Would this be deemed an acceptable answer for an ocr exam style answer to the question: Describe and explain what happens to blood plasma at the arterial end of the capillary.
Answer: Blood plasma move out the capillary and forms tissue while plasma proteins and red blood cells which cannot pass through the capillary wall remain in the capillary. Blood plasma moves out the capillary because the hydrostatic pressure is greater than the osmotic pressure so the fluid move down the pressure gradient. The osmotic pressure is caused by the capillary blood having a lower water potential dues to solutes like plasma proteins being in it so fluid move down the water potential gradient. However the effect of the hydrostatic pressure is greater than the osmotic pressure so overall fluid leaves.

Heya, I'm going to put this in the Biology forum for you as you should get more responses there. :h:

You should also check out the forum to see if there's any other threads there which might be helpful to you! http://www.thestudentroom.co.uk/forumdisplay.php?f=129
Original post by ElectronDonor
Would this be deemed an acceptable answer for an ocr exam style answer to the question: Describe and explain what happens to blood plasma at the arterial end of the capillary.
Answer: Blood plasma move out the capillary and forms tissue while plasma proteins and red blood cells which cannot pass through the capillary wall remain in the capillary. Blood plasma moves out the capillary because the hydrostatic pressure is greater than the osmotic pressure so the fluid move down the pressure gradient. The osmotic pressure is caused by the capillary blood having a lower water potential dues to solutes like plasma proteins being in it so fluid move down the water potential gradient. However the effect of the hydrostatic pressure is greater than the osmotic pressure so overall fluid leaves.


That seems about right. Just mention that the reason why the proteins can't pass is since they are too large.

Hope this helps :smile:
(edited 9 years ago)

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