FLUID COMPARTMENTS AND FLUID SHIFTS. Water accounts for a total of 60-70% of body weight and is contained in three compartments: intracellular, interstitial and intravascular. Intracellular water accounts for about 40% of body weight and 70% of total body water.
Which lymph nodes are swollen can help identify the problem. 1  The glands on either side of the neck, under the jaw, or behind the ears commonly swell when you have a cold or sore throat.  Glands in the armpit (axillary lymph nodes) may swell from an injury or infection to the arm or hand.
First, if you have an infection in the area, then the lymph nodes will get bigger because the immune cells within them are dividing and getting ready for the battle. If you have an enlarged and tender node in your neck, that suggest that your body is trying to fight off an infection of your throat. There are other possible causes of enlarged lymph nodes that are less common. For example, some cancers can cause enlarged lymph nodes.