W2 Water Balance & Hydration

Question 1

Whats Intra-cellular Volume?

Answer 1

All fluids outside of the cells

Question 2

What’s Interstitial Fluid Volume?

Answer 2

Located in spaces between tissue cells

Question 3

What’s Plasma Volume?

Answer 3

Liquid portion of blood

Question 4

What is the name called when water moves between different compartments?

Answer 4

Osmosis - is the net movement of solvent molecules through a partially permeable membrane from a region of low solute concentration to a region of high solute concentration

Question 5

What’s a solvent?

Answer 5

A substance that dissolves a solute E.g. H2O

Question 6

What’s a solute?

Answer 6

A substance dissolved in a solvent E.g. Glucose & Electrolytes

Question 7

What’s the definition of Osmolality?

Answer 7

The number of osmoles (Osmol) of solute per Kg of solution

Question 8

What’s the definition of Osmolarity?

Answer 8

The number of osmoles (Osmol) of solute in a litre of solution

Question 9

What does Euhydration mean?

Answer 9

The state of normal body water levels

Question 10

What’s Isotonic Osmotic Equilibrium?

Answer 10

• The osmolarity of the intracellular & extracellular fluids are the same = no movement of water.
• So there is a balance between the inside & outside of the cell

Question 11

What does Hypohydration mean?

Answer 11

The state of reduced body water level.

E.g. this is used in food presentation because high sugar or high salts is in them

Question 12

What does Hyperhydration mean?

Answer 12

The state of elevated body water level.

E.g. Wrinkled fingers after being in the swimming pool