MICROANATOMY

Detailed explanation-1: -Lymph capillaries are found in all regions of the body except the bone marrow, central nervous system, and tissues, such as the epidermis, that lack blood vessels. The wall of the lymph capillary is composed of endothelium in which the simple squamous cells overlap to form a simple one-way valve.

Detailed explanation-2: -The lymphatic system includes lymph vessels, lymph fluid, and lymph tissues and organs (lymph nodes, tonsils, spleen, thymus, and the thoracic duct). The lymphatic system is parallel to and works in concert with the venous system. Lymphatics are fragile and are more likely to collapse under pressure than the veins.

Detailed explanation-3: -The lymphatic structures that closely parallel veins are called: lymph vessels.

Detailed explanation-4: -Some lymph nodes are clustered under the skin, particularly in the neck, armpits, and groin. Other lymph nodes are deep within the body, for example inside the abdomen. The lymphatic vessels drain into collecting ducts, which empty their contents into the two subclavian veins, located under the collarbones.