9. Body water and its distribution in the human body. Osmolality and osmolarity - methods of investigation, reference ranges, result interpretation. Flashcards
What are the Functions of Water in the Body?
Acts as a Solvent
Plays Important Role in Transport of Different Substances
Regulation of the Body Temperature
How Much Does Water Make up of the Human Body?
45 - 75% of Total Weight of Adult
How Much Water Does it Make Up in New-borns?
75%
How Much Water Does it Make Up in Young Men?
64%
How Much Water Does it Make Up in Adult Men?
53%
How Much Water Does it Make Up in Young Women?
53%
How Much Water Does it Make Up in Adult Women?
46%
How Much Water Does Adipose Tissue Contain?
Approximately ~ 20%
How Much Water Do Other Tissues Contain?
Approximately ~ 73%
What is the Volume of Water in the Extracellular Space?
15 Litres
What is the Volume of Water in the Intracellular Space?
25 Litres
What is OsmoLARity?
Number of Osmotically Active Particles
Dissolved in 1 Litre of Body Fluid
What is the Range of OsmoLARity?
280 - 295 mosm / L in Serum
What is OsmoLALity?
Number of Osmotically Active Particles
In 1Kg of Body
What is the Range of OsmoLALity?
281 - 297 mosm / Kg