Functions of body water:It is essential to metabolism of the bodyIt acts as a transport vehicle.It is a good lubricant.It is necessary for temperature regulation
Functions of body water: It is essential to metabolism of the body. It acts as a transport vehicle. It is a good lubricant. It is necessary for temperature regulation
WaterbalanceIntakeOutputNutrientsoxidationICFInterstitialDigestivePlasmatracts40%BW15%BW5%BWKidney(urine) 1500mlIntestine(feces)200mlLung(watervapor)400mlSkin(sweatand evaporation)400mlOsmotic pressure of this lost water?
Water balance 15%BW 40%BW 5%BW Interstitial Plasma ICF 吸收水分 Kidney(urine) 1500ml Intestine(feces) 200ml Lung(water vapor) 400ml Skin(sweat and evaporation)400ml 排 出 水 分 Intake Output Digestive tracts Nutrients oxidation Osmotic pressure of this lost water?
The Balance Concept: Input -Output = Storage/DepletionStorageI tInternalExcretionPool (ECFInputs fromInsideConcentration)environmentBodyof substanceMetabolicMetabolicProductionConsumption
The Balance Concept: Input - Output = Storage/Depletion Internal Pool (ECF Concentration) of substance Storage Metabolic Production Metabolic Consumption Inside Body Inputs from environment Excretion
Regulation of fluid volume and osmotic pressureRegulation pathwayDisturbanceADHRAASANPVolumeThirstOsmoticpressureThirstADHRAAS
Regulation of fluid volume and osmotic pressure Disturbance Volume Osmotic pressure ADH RAAS ANP Thirst Thirst ADH RAAS Regulation pathway
The regulation of thirsty reactionThirsty center locates in the hypothalamusStimulus: Increase of plasma Na*Decrease of effective blood volumeIncrease of ANGII(b) Waterflows outof the(a)Greaterconcentrationofsolutes (greendots)outsidecell, equalizing the solutethe cell than inside.concentration and shrinkingthe.cell
The regulation of thirsty reaction Thirsty center locates in the hypothalamus. Stimulus: Increase of plasma Na+ Decrease of effective blood volume Increase of ANGII