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.
Which lymph nodes become swollen can sometimes help track which diseases are creating the problem. Lymph nodes become swollen usually from bacterial or viral infections. As bacteria or viruses invade the nodes, they harden and inflame, and they can really begin to hurt. With colds and flus, you may note painfully swollen nodes around the throat, under the arms and at the groin.