Attn on a letter stands for attention and denotes the attention line. The attention line specifies who within an organization should receive a correspondence or package.
The lymph vessels carry lymph from the tissues through the lymph nodes, where lymphocytes neutralize or kill and macrophages consume pathogens, then deliver the cleansed fluid to the blood.he lymphatic capillaries merge into the afferent lymphatics, somewhat larger lymph vessels that carry the lymph among the lymph nodes. The lymphatic capillaries in the SMALL INTESTINE, called lacteals, are uniquely able to absorb the fatty products of digestion, which they ultimately deliver to the blood.
The lymphatic system is composed of an intricate system of lymphatic vessels and lymphatic tissues including lymph nodes, spleen and thymus. The main purpose of lymphatic vessels is to absorb and return lymph fluid from the body back to the blood, and to assist in the bodyâs immune function. Three types of blood vessels can be differentiated. Arteries carry blood away from the heart, and veins carry blood toward the heart.