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878
Repost from غيث
"وماذا بعد؟
قد تكون صادقاً وتتهم بالكذب،
قد تكون وفيً و تتهم بالخيانة،
قد تكون صالحً و تتهم بالفسق،
ومهما كنت وقالوا عكس ذلك
لا تجادل لا تبرر لا تكترث و
أعرض عن الجاهلين، فالعالم لن
يرضى عنك، ومن أحبك إتبعك وساندك
ونصحك وكان لك سندً،
ومن حسدك ذم فيك وثبطك وسعى في
تدميرك-مع كل ذلك لا تكترث وثق بالله،
واصبر لحكم ربك فإنك بأعيننا. "❤️
دمت بخير وعجل الله اللقاء.
878
Repost from كتب و مراجع طبية
Spleen
The spleen is an organ whose functions mostly contribute to body defenses; it is considered part of the lymphatic system and is the largest lymphoid organ. In an adult, it is approximately 12 cm long and weighs about 200 grams. The spleen is located between the fundus of the stomach and the diaphragm; it is almost entirely surrounded by peritoneum and is held in position by two peritoneal folds. The spleen has an oblong, flattened form; contains a large number of blood vessels; and is a dark-purplish color. Near its medial border is a long fissure, the hilum, for the entrance and exit of the large, branching splenic artery and vein, as well as nerves. In cross-section, the spleen displays areas called red pulp and white pulp. The dark, reddish-brown red pulp makes up most of its tissue, in contrast to the semiopaque white pulp, which consists mainly of lymphocytes. The spleen's varied functions include processing blood to remove dead or defective red blood cells and platelets; recycling iron from red blood cells; producing new red blood cells in the developing fetus; and serving as a site where populations of lymphocytes increase.
