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.
ductless gland. [duktâ²les] a gland lacking an excretory duct, such as an endocrine gland, that secretes hormones directly into blood or lymph. ductless gland. A gland with cells that secrete specific molecules into the adjacent interstitial space (paracrine glands) or into the blood stream (endocrine glands).