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.
Sometimes, a cancerous thyroid nodule can't be seen or felt by you or your doctor. In those cases, you may notice a swollen lymph node instead. Lymph nodes fight infection and are located throughout your body. If thyroid cancer spreads to the lymph nodes in your neck, then the lymph nodes will become swollen. Lymph nodes can become enlarged for a variety of reasonsâmany of them not related to thyroid cancer. When you have a severe sore throat, for instance, the lymph nodes in your neck may swell.