Heart Failure Â». Heart failure is the pathophysiologic state in which the heart, via an abnormality of cardiac function (detectable or not), fails to pump blood at a rate commensurate with the requirements of the metabolizing tissues and/or pumps only from an abnormally elevated diastolic filling pressure.
(Physiology) a glandular organ of vertebrates, consisting in man of two lobes situated below the thyroid. In early life it produces lymphocytes and is thought to influence certain immunological responses.
(lÄ­vâ²Ér) n. 1. A large, reddish-brown, glandular organ in the abdominal cavity of vertebrates that secretes bile and is active in the formation of certain blood proteins and in the metabolism of carbohydrates, fats, and proteins. 2. An organ in invertebrates that is similar to the vertebrate liver. 3.