| What is Tissue Fluid? | -Simply a Fluid that gives the Cells everything they need
-This is from the Capillaries |
| What will the Tissue Fluid have, that can be Different to Body Cells? What can this mean? | -Different Water Potential
-Net Movement may be none, Fluid or Cell |
| What happens if the Tissue Fluid has a Higher Water Potential than the Body Cell? | -The Cell will have more Water being Osmosed into it
-If too much water enters, the cell will Burst. This is Lysis |
| What happens if the Tissue Fluid has a Lower Water Potential than the Body Cell? | -The Tissue Fluid will have more Water being Osmosed into it
-If too much water leaves the Cell, it will Shrink |
| What happens if the Tissue Fluid has the Same Water Potentials as the Cell? | -The Cell will have an Equal amount of Water leaving, and Entering
-Therefore nothing bad nor Good can happen |
| How can Kidneys be Important of Water Balancing? What else can it do? | -Kidneys can determine how much Water is lost in Urine [Piss] by changing the Volume of Urine made, and how Concentrated it is
-Kidneys also can get rid of other Waste, and control other Substances
-This can happen inside the Kidney Tubules [Very very small Structure] |
| Image of Kidney? | . |
| What happens in each of the Kidney Tubules? | Filtration:
-Blood goes through the Glomerulus at High Pressure.
-Small molecules like Water, Sugar, Salt and Urea are Filtered into the Capsule
-Liquid then flows through the Tubule and begins...
Selective Reabsorption:
-Here, simply all the Sugars are Reabsorbed, Some salt is Reabsorbed and some Water is Reabsorbed [Dependent of ADH Level]
Release: So everything that wasn't Reabsorbed turns into Urine, which is then Released |
| Image of Kidney Tubules | . |
| What affects the Concentration of Urine? | -The hormone Anti-diuretic Hormone [ADH simply] |
| Where is ADH from? What does ADH do? | -ADH is from the Pituitary Gland
-The Brain can Monitor the Water Content of the Blood
-ADH makes the Kidney Tubules more Permeable, which results in more Water being Reabsorbed back into the Blood |
| What is ADH controlled by? | -A Negative Feed back System |
| So what happens if you have a lot of Water? | -Brain detects the Water Gain
-Pituitary Gland makes Less ADH
-If there is Less ADH, means Less Permeable Tubules which means Less Water Reabsorbed |
| What happens if you have little Water? | -Brain Detects Water level
-Pituitary Gland makes more ADH
-If there is more ADH, means More Permeable Tubules which has More Water Reabsorbed |
| So how can the Urine Concentration be dependent on ADH Level? | -ADH Level determines how much Water is wasted
-More wasted water means Less Concentrated Urine
-Less Wasted water means More Concentrated Urine
-Colour can tell you. More Yellow = More concentrated |
| How can the Temperature link in with Water Concentrations | -If its Hot, or your working out, Sweat will be made
-Sweat contains Water so Sweating lots can mean Water Loss, which can mean ADH Level goes up
-If you lose more Water than you took, this can result in Dehydration
-Brain can also trigger thirst feelings, which make you want to drink, restoring a Balance again |
| What does Excess Water Intake mean do? | -Kidney gets rid of More Water leading to Lots of Dilute Urine |
| What does High Salt intake do? | -Kidney gets ride of more Salt, leading to more Concentrated Urine |
