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Dentistry Biological Science > Bodily Fluids > Flashcards

Flashcards in Bodily Fluids Deck (8)
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1
Q

In an adult male, what percentage of them is water?

What are the 3 places that this water comes from?

A

60% water
Intracellular, plasma, interstitial
Most of this water is inside the cells

2
Q

How many litres of water is present in each of the 3 places where water is in the body?

A

Plasma = 3.5L
Interstitial fluid = 10.5 L
Intracellular fluid = 28L

3
Q

What are other fluid components of the body?

A

Cerebrospinal fluid (lines the outside of the brain)
Synovial fluid
Lymph
GI tract secretions

4
Q

What equation can we use to work out the concentration for?

A

Volume = substance added / concentration

5
Q

What 3 substances can we use to work out a concentration of a substrate?

A
  • Plasma volume (something that does not cross capillaries)
  • Extracellular fluid (something that does enter cells easily)
  • Total body water
6
Q

Finish these two equations:

Interstitial space = ?
Intracellular space = ?

A

Extracellular space - plasma volume

Total body water - extracellular space

7
Q

What are the major constituents in blood?

A

Ions in solution
Proteins
Dissolved gases, nutrients, metabolites
Other cells in blood (lymphocytes e.c.t)

8
Q

What are the 3 main ions in body fluids?

What do they determine?

A

Na+, Cl-, K+

They determine osmolarity.

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