SEARCH
You are in browse mode. You must login to use MEMORY

   Log in to start

level: Controlling Water Content

Questions and Answers List

level questions: Controlling Water Content

QuestionAnswer
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