in this video we are going to continue our discussion on tennessee and we're actually going to compare hypertonic to hypotonic solutions so let's start with hypertonic solutions first uh if we look at the word hypertonic the prefix hyper tells us high or above um and the name of a solution actually tells us about the concentration of solute so if we see the prefix hyper in hypertonic that tells us we have more solute than intracellular fluid right because remember internicity we are comparing movement of water from icf to ecl so again we have the same red blood cell we have the same solution which is going to see some different numbers okay so the orange circles still represent the solute to blue circles still represent the water and if we know that a hypertronic solution has more solute number one in icf and the number of the soil you deny cfs4 right so we have four proteins or urea or sodium how much of that solute should i draw in the extracellular fluid right so this one is going to be extracellular four so a hypertronic solution by definition tells us more solid so anything above four right let's do six now if we have more solute the solute tends to interact with the water that we find in the solution okay and that leaves us with less free water so when we talk about hypertronic solutions not only do they have more solute than icf they also have less water than icf so if in this diagram we have three blue circles that we represented water with and we know that there is less water in extracellular fluid how many blue circles should i draw it makes sense that i can draw two so if a blue circles represent water and we know that through osmosis water moves from where we have more to where we have less let's identify where we have more water and where we have less so we have three waters in icf and we have two waters in ecf that means we have more water in the cell and we have less water in extracellular fluid and through osmosis water is going to move from where we have more to where we have less and we're going to have a net movement of water out of the cell so a cell that is placed in a hypertonic solution net movement of water is out movement out of cell and if we have a net movement of water out of a cell the cell is losing fluid cell losing fluid and the volume of a cell is going to decrease volume decreases so a place that the cell in hypertonic solution becomes created it shrinks okay and usually this shingridge is uh often represented as the cell that kind of looks like this now let's look at the hypotonic solution and we are going to follow the same analogy where we did previously so hypotonic means less solute than intracellular fluid but that also means more weather so let's draw some of those let me get my colors let's start with the solute so if we have less solute and hypotonic solution than icf and we have four molecules of solute here how many should i throw in ecf less than four okay so let's say we draw two we also know that extracellular fluid which is hypotenuse has more water than icf and that's because again we have less solute so there is less interaction with water and we have more free water available and if we have more water of an icf and we know that icf has three then let's say i can draw four orders in ecf so again let's go to figuring out where we have more than where we have less three in intracellular fluid for an extracellular fluid so we have more in easier and we have less in ics and according to osmosis water is going to move from where we have more to where we have less which means net movement is into the cell if more water is now moving into the cell what's going to happen to the volume of that cell cell is going to accumulate the fluid cell accumulates and cell is going to increase in size and that means cell is swelling so we can represent this increased volume of the cell through this dotted line so when we talk about tenacity remember we said tonicity is the ability of extracellular fluid to make water move in or out of the cell due to osmosis a hypertonic solution makes water move out of a cell because we have more water in icf and less weather in ecf and as a result of that the cell will shrink or kinate a cell that's placed in a hypotonic solution is going to have a net movement of water into the cell so the cell gains additional water is volume increases and the cell is going to swell