Lymphedema Exam With Complete Solutions

Lymphedema Exam With Complete Solutions Lymph - answerThe name given to interstitial fluid once it enters the lymph vessels It contains: Protein molecules Water Cellular components Fatty acids Function of the Lymphatic System - answerProtect the body from infection and disease via the immune response: production, maintenance and distribution of lymphocytes. Facilitate fluid movement from the tissues back into the blood stream. Components of the Lymphatic System - answerLymph vessels Lymph nodes Spleen Thymus gland Tonsils Peyers patches Lymphocytes Superficial Lymph Vessels - answerCapillaries Pre-collectors Deep Lymph Vessels - answerCollectors Trunks Run parallel to deep arteries and veins Contain smooth muscle Valved (0.6-10 cm apart) Collectors - answerDivided into segments by valves Each segment is called a lymphangion Lymph flows in one direction Anastomoses form between the collectors Lymphangion - answerTeardrop shaped segments Smooth muscle layer Transport of lymph via intrinsic contractions 6-10 contractions per minute at rest Can increase x 10 with exercise Contract segmentally Valved, semi-lunar Valvular insufficiency leads to reflux Extrinsic Factors in Lymph Flow - answerContraction of muscles Movement of body parts, joints Arterial pulsations Respiration Tissue compression externally-bandages and garments Trunks - answerTrunks drain all four quadrants of the body Thoracic Duct - answerpenetrates the diaphragm; abdominal breathing will create a suction force and facilitate lymph flow (drains both lower extremities and left arm) Cisterna Chyli holds - answerup to 1 cup of fluid Right Lymphatic Duct - answerdrains right upper quadrant Liters of Lymph transported/day - answer1-2liters Lymph empties into - answersuperior venous angles Watersheds - answerDistinct anatomic areas of lymph drainage Lymph can be drained across a watershed anastomoses can be formed