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Osmolarity can be defined as the measure of solute concentration. Solute concentration can be defined as the number of osmoles of solute/liter of solution. The osmolarity of a solution can be expressed as Osm/L.
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- The osmolarity of plasma is maintained at about 300 mOsM. What would the osmolarity inside a red blood cell need to be to maintain osmotic equilibrium between the intracellular fluid and plasma? Give one specific reason why it is important to maintain plasma omolarity within a narrow range of values.Define plasma osmolality and identify two ways in which plasma osmolality is maintained?A 5% dextrose is isoosmotic to plasma. What effect would infusion of 1L of a 5% dextrose solution have on ECF and ICF volumes? How it would affect body fluid osmolality of a 70 kg individual and why?
- Explain how the body detects changes in the osmolality of plasma and describe the regulatory mechanisms by which a proper range of plasma osmolality is maintained.What are major factors that determine blood osmolality? The osmolality of 0.9% NaCl is ___________. How is the osmolality different from the molarity? Also, predict the effect of 1 L of 600 mOsm/L infusion of sucrose on patients RBC’s osmolality and volume, if previous osmolality of RBC’s was 250 mOsm/L, plasma volume – 3.6 L and RBC’s volume – 2.4 L.The osmolarity of plasma is maintained at about 300 mOsM. What would the osmolarity inside a red blood cell need to be to maintain osmotic equilibrium between the intracellular fluid and plasma?
- Blood volume must be restored in a person who has lost large amounts of blood due to serious injury. This is often accomplished by infusing isotonic NaCl solution into the blood. Why is this more effective than infusing an isoosmotic solution of a penetrating solute, such as urea?if the osmolarity of plasma increases what would happen to the size of a red blood cell? Would it increase or decrease?Active transport requires the use of ATP. Identify two ions that require active transport to be selectively reabsorbed.
- Explain the Plasma osmolality ?How can you apply the Michaelis-Menten dynamics to explain what happens in plasma concentration of a solute reaches Tm and the effect that has on the Clearance of the solute?Blood plasma has an osmolarity of about Group of answer choices: 100 mOsm/L. 900 mOsm/L. 1200 mOsm/L. 300 mOsm/L. 30 mOsm/L.