lymphatic tissue

lymphatic tissue

n.

Tissue consisting of a network of reticular fibers and cells, the meshes of which are occupied by lymphocytes. Also called adenoid tissue, lymphoid tissue.

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lymphatic, lymphoid

1. pertaining to lymph or to a lymphatic vessel.

2. a lymphatic vessel.

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lymphatic aplasia

causes distention of other lymphatics where lymph flow is blocked and local edema.

lymphatic ducts

the two larger vessels into which all lymphatic vessels converge. The right lymphatic duct joins the venous system at the junction of the right jugular and subclavian veins and carries lymph from the cranial right side of the body. The left lymphatic duct, or thoracic duct, enters the circulatory system at the junction of the left jugular and subclavian veins; it returns lymph from the cranial left side of the body and caudal to the diaphragm.

lymphatic enlargement

includes distention with lymph as in lymphangiectasia, or thickened as in cutaneous tuberculosis.

lymphatic flow obstruction

by local compression, congenital, segmental aplasia, lymphangitis, lymphadenitis.

lymphatic follicle

see lymph nodule; may be primary or secondary.

inherited lymphatic obstruction edema

inherited as a single recessive in Ayrshire and Hereford cattle; calves are edematous, locally or generally at birth and do not improve; the defect is in aplasia of lymph vessels and nodes.

lymphatic leukemia

see lymphatic leukemia.

lymphatic lumbar trunks

a plexus of lymphatics on the abdominal roof that drain into the cisterna chyli.

lymphatic nodule

see lymph nodule.

primary lymphatic organs

see lymphoid organs.

secondary lymphatic organs

see lymphoid organs.

lymphatic system

the lymphatic vessels and lymphoid tissue, considered collectively. See also circulatory system.

Lymphatic vessels and lymph nodes in the dog. By permission from Aspinall V, O'Reilly M, Introduction to Veterinary Anatomy and Physiology, Butterworth Heinemann, 2004

lymphatic tissue

see lymphoid tissue.

lymphatic vessel obstruction

occurs as a result of pressure from nearby tumors or other space-occupying lesions, because of hypoplasia of lymph nodes in the fetus, in extensive calcinosis, e.g. in Solanum malacoxylon poisoning and in horses not getting sufficient exercise. Called also lymphangiectasia.

lymphatic vessels

the capillaries, collecting vessels, and trunks that collect lymph from the tissues and carry it to the bloodstream; called also lymphatics.