The spleen is a lymphatic organ located in the left upper abdomen under the diaphragm and ribs. It is oval shaped, 7-14cm long and weighs 150-200g. The spleen has several surfaces - a diaphragmatic surface facing upward, a visceral surface divided into gastric and renal regions, and borders. It filters blood and recycles iron, and contains red and white pulp. The spleen receives blood from the splenic artery and drains into the splenic vein. Diseases can cause an enlarged or absent spleen.

1. Abhishek jha

3. • 2nd lymphoid organ ,Oval in shape, 7 -14cm in length
and 150 -200 grams in weight.
• Lies just beneath the left half of the diaphragm
close to 9 ,10 and 11 ribs and on the left side of
abdomen.
• Pleural cavity separates spleen and diaphragm from
the rib.
• Has Diaphragmatic ,visceral and colic surface and
anterior ,posterior and inferior border.

5. Diaphragmatic surface or phrenic
surface :
• convex, smooth, and is directed upward,
backward, and to the left, except at its
upper end, where it is directed slightly to
the middle.
• It is under surface of the diaphragm, which
separates it from the ninth, tenth, and
eleventh ribs of the left side, and the

7. • visceral surface : divided by a ridge into two regions:
an anterior or gastric and a posterior or renal.
• The visceral surface is related to the left kidney,
stomach and splenic flexure of colon.
• Each surface is covered with visceral peritoneum,
which reflected as double layer onto the left kidney as
splenicorenal ligament.
• anteriorly border separated the surface from concave
visceral surface where hilus found ,Hilus is part where
vessels enter and leave the organ.

8. • Spleen forms parts of the reticuloendotelial
system.
• Main function is hematopoiesis in fetal life
and in adults with reutilization of iron from
hemoglobin of destroyed red blood cells.
• Its has red and the white pulp, which are
separated by the marginal sinus.

10. • Red pulp composed sinuses, splenic
cord and marginal zone and main
function to filter red blood cells and
reserve monocytes.
• White pulp is composed of malpighian
corpuscles
and help in active immune response.

11. • Spleen is supplied with blood by splenic artery
and blood drains from splenic vein.
• Splenic artery is branch of celiac artery and
follows pancreas, short gastric artery and left
gastroepiploic to stomach.
• Splenic vein joins with superior mesenteric vein,
to form the hepatic portal vein and follows to
the pancreas.

13. • Spleen is undercover of thoracic cage and
is not palpable
• Splenomegaly : enlarged spleen due to
cancer, specifically blood-based leukemia.
• Asplenia : where the spleen is not
present.
• Hyposplenia: reduce splenic functions..

15. • Spleen is particularly liable to rupture in
falls and automobile accidents and
bleeding from it is difficult to control and
Splenectomy should be done.
• A splenectomy is a surgical
procedure that partially or completely
removes the spleen.