Volumes of body fluids compartment

What does a 70kg young man body fluid/water consist of:

 1) 60% water, 2) 18%proteins and other substances, 3) 13% minerals, 4) 15% fats (the amount of fat varies with individual)

What may affect the total body water:

1) age, 2) obesity, and 3) sex

How much water does a newborn baby have

75% water

How much water does a person in their 80s:

50% water

**Do we dry out as we age (decrease of body water)**: yes or no

yes

Why does the amount of fat/adipocytes make such a difference:

 because fat has a very low water content (10-20% water). Plasma is 93% of water, most organ of muscles 70% and bone is 25% water - but fat has the lowest content compare to other tissues in the body because

\

which sex has a lower total body water, males or females?

\

females have a lower body water due to having higher body fat than males

we know that young male that is 75kgs on average has 60% of body water, how many litres of water is it - (extracellular 14L+ intracellular 28L=42

60% of water=42 litres

what is the extracellular, further subdivided into

what is the interstitial fluid further subdivided into

plasma (inside the vascular part and non-cellular part of blood) and interstitial fluid (outside of the vascular part)

\
* rapidly exchanging with plasma and slowly exchanging with dense connective tissue and bones (tendons and cartilages)

* what is the intracellular and extracellular compartments of blood
* what percentage of body weight is lymph and which compartment does it belong interstitial or plasma

* intracellular: RBC. WBC. and platelets; and extracellular: plasma
* 2-3% of body weight and it is part of the interstitial