7/25/2019 Body Fluids Introduction.docx

1/16

Minindu Ekanayake[Email address]

Abstract[Draw your reader in with an engaging abstract. It is typically a short

summary of the document.When youre ready to add your content! "ust click here and start typing.]

#E$$%$A&

E'(I&)'ME'*IDI)*s +roup

7/25/2019 Body Fluids Introduction.docx

2/16

,,- /-

,/-

Introduction

,,- of her body weight 0/ kg 1standard

male1

23 liters of water

/- of his body

weight

This lower percent being due to a higher fat

'eonates contain more water

than adults4 0,56/- water

With proportionately more

extracellular uid (ECF)

then adults.

At birth! the amount ofinterstitial 7uid isproportionally three times

larger than in an adult.

8y the age of 12 months!

this has decreased to /-

which is the adult 9alue.

1 | 8 o d y : l u i d s

0,- 56/-

7/25/2019 Body Fluids Introduction.docx

3/16

*otal body water as a percentage

of total body weight;*8Wlasma4 93% water;? 0- 1plasma

solids1leural

>eritoneal

Byno9ial

>ericardial

#erebrospinal

Intraocular

%rinary

$umen

+.I. $umen

Body l!id "ompartments #$0 g male&

Body l!id "ompartments #$0 g male&

' | 8 o d y : l u i d s

7/25/2019 Body Fluids Introduction.docx

6/16

% ofBody

(eight

% of )otalBody

(ater

*ol!me#+itres&

," 2$ '5 19

lasma '.5 $.5 3.2

/ 12.0 20.0 .'

ense ")water

! $.5 3.2

Bone water ! #! 3.2

)ranscell!lar 1.5 2.5 1.0

/" 33 55 23

)B( 0% 100%'2

liters

*i+erence in ICF and ECF by ma,or Cations

and -nions

5 | 8 o d y : l u i d s

7/25/2019 Body Fluids Introduction.docx

7/16

| 8 o d y : l u i d s

7/25/2019 Body Fluids Introduction.docx

8/16

Intracellular Fluid

*he Intracellular :luid is composed of at least C/C2 separate tiny

cellular packages. *he concept of a single united compartment called intracellular

7uid is clearly articial.

*he I#: compartment is really a 9irtual compartment considered

as the sum of this huge number of discontinuous small collections.

Fow can the term Gintracellular 7uid be used as though it was a

single body of 7uidH

*he reason is that though not united physically! the collections

ha9e e=tremely important unifying similarities which make the I#:

concept of practical usefulness in physiology. In particular!

similarities of location! composition and beha9iour4

o +ocation4 )he distinction between /" and ," is clear

and is easy to !nderstand4 they are separated by thecell membranes

o "omposition4 /ntracell!lar !ids are high in potassi!m

and magnesi!m and low in sodi!m and chloride ionso Beha6io!r4 /ntracell!lar !ids beha6e similarly to

tonicity changes in the ,"

8ecause of this physiological usefulness! it is con9enient to talk of

an idealised I#: as though it were a single real entity. *he use of this

con9ention allows predictions to be made about what will happen

with 9arious inter9entions and within limits these are physiologically

meaningful.

$ | 8 o d y : l u i d s

7/25/2019 Body Fluids Introduction.docx

9/16

Extracellular Fluid

A similar argument applies to the E=tracellular :luid.

*he E#: is di9ided into se9eral smaller compartments ;e.g.45 plasma!Interstitial 7uid! 7uid of bone and dense connecti9e tissue and

transcellular 7uid

7/25/2019 Body Fluids Introduction.docx

10/16

*he IB: bathes all the cells in the body and is the link between the

I#: and the intra9ascular compartment.

)=ygen! nutrients! wastes and chemical messengers all pass

through the IB:. IB: has the compositional characteristics of E#: ;as

mentioned abo9e< but in addition it is distinguished by its usually

low protein concentration ;in comparison to plasmalasma is the only ma"or 7uid compartment that e=ists as a real 7uid

collection all in one location.

It diers from IB: in its much higher

protein content and its high bulk 7ow

;transport function

7/25/2019 Body Fluids Introduction.docx

11/16

,,42, ,,430

.,;34C