Unit 2: Nutritional Requirements of the Preterm Infant

Intracellular fluid is contained by the a cell's plasma membrane, and is the matrix in which cellular organelles are suspended, and chemical reactions take place.[3] In humans, the intracellular compartment contains on average about 28 litres of fluid, and under ordinary circumstances remains in osmotic equilibrium. It contains moderate quantities of magnesium and sulphate ions.

Source: Wikipedia

Intracranial hemorrhage:  A bleeding within the skull. Intracranial bleeding occurs when a blood vessel within the skull is ruptured or leaks. It can result from physical trauma (as occurs in head injury) or nontraumatic causes (as occurs in hemorrhagic stroke) such as a ruptured aneurysm. Anticoagulant therapy, as well as disorders with blood clotting can heighten the risk that an intracranial hemorrhage will occur.

Source: Wikipedia

Ileocecal valve: A sphincter muscle valve that separates the small intestine and the large intestine. Its critical function is to limit the reflux of colonic contents into the ileum. The ileocecal valve is distinctive because it is the only site in the gastrointestinal tract that is used for Vitamin B12 and bile acid absorption. Roughly two litres of fluid enters the colon daily through the ileocecal valve.

Source: Wikipedia

Iron deficiency, a condition resulting from too little iron in the body. Iron deficiency is the most common nutritional deficiency and the leading cause of anemia in the United States. The terms anemia, iron deficiency, and iron deficiency anemia often are used interchangeably but equivalent. Iron deficiency ranges from depleted iron stores without functional or health impairment to iron deficiency with anemia, which affects the functioning of several organ systems.

Source: MedicineNet.com

Intravascular fluid: a term sometimes used to refer to that part of the extracellular fluid that is within the blood vessels, i.e., the plasma.

Source: Mosby's Medical Dictionary, 8th edition. (c) 2009, Elsevier.

Intraventricular haemorrhage: bleeding into the fluid-filled areas (ventricles) inside the brain. The condition occurs most often in babies that are born early (premature).

Source: MedlinePlus