Scientists have found that the quantity of aquaporin molecules in...

Question

Scientists have found that the quantity of aquaporin molecules inserted in the membranes of collecting duct cells changes in response to ADH levels. Draw a line graph proposing a relationship between ADH levels and its effect on the quantity of aquaporins. Additionally, explain how the relationship between ADH and aquaporins corresponds to situations of dehydration and hydration.

Accepted Answer

everyone. Let's look at our next question. It says 80 h. secretion stimulates the synthesis and insertion of which of the following into the membranes of the distal convoluted tubules and collecting duct principle cells. Well let's recall from our content video. Um What A. D. H. Is A. D. H. Is a hormone. It's the anti diuretic hormone and it's secreted by the pituitary when the blood osmolarity has become too high or blood pressure too low. And it acts by increasing the water permeability of these last two parts of the net from the distal convoluted tibial and the collecting duct principal cells so increases the water permeability of their cell membranes. As a result the body re absorbs more water from the Phil trade as it becomes urine. And uh then the reabsorption of more water causes blood volume to increase that decreases the osmolarity of the blood and increases blood pressure. So it's part of this control system to maintain a constant blood osmolarity. Well how do you increase the water permeability of cell membranes while water diffuses in and out of cell membranes through channel proteins called aqua parents. So you increase the synthesis and assertion of choice D. Aqua porn two channels. And that makes the cell membranes more permeable to water. When we look at our other answer choices we see we have choice a potassium leak channels. Choice b voltage gated sodium channels. Choice c voltage gated calcium channels. We see these are all ions and many times the passage of ions into or out of cells. Does is involved in the movement of water since water will then move by osmosis to try and go to the region of higher concentration. But in this particular um system of a th you just have increased water permeability. So you're not using um channels that increased diffusion of ions. So A. B. And C. Are not correct. We're looking at those aqua porn channels to allow more water to be reabsorbed one way we can remember a little tip. Um If you're trying to remember what A. D. H. Does, it's called the anti diuretic hormone. Um you can recall that if you take a diuretic you are doing that to eliminate more water from your body. So the anti diuretic hormone causes your body to re absorb more water. So just a little helpful tip to remember that. So once again a th secretion stimulates the synthesis and insertion of which the following into the membranes of the distal convoluted tubules and collecting the principal cells. And that's twisty aqua porn. Two channels. See you in the next video

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