anatomyphysiologyblog - GROSS ANATOMY OF SPLEEN
Shape of Spleen
The spleen is an ovoid, usually purplish, pulpy, soft, vascular (sinusoidal) volume almost the size as well as shape of one's fist. The spleen is 1 inch thick, three inches wide, v inches long, as well as weighs seven ounces.
Spleen is located inwards left upper exercise of abdomen or hypochondrium. It lies merely beneath the left one-half of the diaphragm or thus the 9th, 10th, as well as 11th ribs. The long axis lies along the shaft of the tenth rib, as well as extends forwards solely every bit far every bit the midaxillary job as well as cannot live palpated on clinical examination. When it is palpable nether left hypochondrium, it is by as well as large 2-3 times enlarged inwards size.
Coverings of Spleen
The spleen is covered past times fibroelastic capsule as well as is surrounded past times peritoneum except at the splenic hilum, (the splenic branches of the splenic artery as well as vein piece of work into as well as piece of work out at hilum).
Presenting parts of Spleen
- Diaphragmatic surface
- Visceral surface
- Superior edge
- Inferior border
- Anterior or lateral terminate
- Posterior or medial end
Ligaments of Spleen
Gastrosplenic ligament
It is the crimp of peritoneum that connects spleen amongst greater curved shape of stomach.
Splenorenal/lienorenal ligament
It is the crimp of peritoneum that connects spleen to the left kidney.
These 2 ligaments are attached to the hilum of spleen. Splenorenal ligament carries splenic vessels as well as sometimes tail of pancreas.
Phrenicocolic ligament
It is attached to the left colic flexure (colon) as well as diaphragm. This ligament supports the spleen from below.
Important relations of Spleen
Anteriorly, the stomach, as well as tail of pancreas
Posteriorly, the left exercise of the diaphragm,which separates it from the pleura, lung, as well as ribs 9th, tenth as well as 11th.
Inferiorly, the left colic flexure.
Medially, the left kidney.
Blood Supply of Spleen
The spleen ordinarily contains a large quantity of blood that is expelled periodically into the circulation past times the activeness of the polish musculus inwards its capsule as well as trabeculae. The large size of the splenic artery (or vein) indicates the book of blood that passes through the spleen's capillaries as well as sinuses. The sparse fibrous capsule of the spleen is composed of dense, irregular, fibroelastic connexion tissue. The fibrous capsule is thickened at the splenic hilum. Internally the trabeculae, arising from the deep appear of the capsule, comport blood vessels to as well as from the parenchyma or splenic pulp, the kernel of the spleen.
Arteries of Spleen
The large splenic artery is the largest branch of the celiac artery. It has a tortuous course of education every bit it runs along the upper edge of the pancreas. The splenic artery thus divides into almost 6 branches, which piece of work into the spleen at the hilum.
Veins of Spleen
The splenic vein leaves the hilum as well as runs behind the tail as well as the torso of the pancreas. Behind the cervix of the pancreas, the splenic vein joins the superior mesenteric vein to shape the portal vein.
Lymph Drainage of Spleen
The lymph vessels emerge from the hilum as well as transcend away through a few lymph nodes along the course of education of the splenic artery as well as thus drain into the celiac nodes.
Nerve Supply of Spleen
The nerves accompany the splenic artery as well as are derived from the celiac plexus.
Also Read:
Histological features of spleen
REFERENCES:
Following resources are used piece preparing this post service (readers are strongly recommended to become through them for to a greater extent than details):
Gray's Anatomy
K. L. Moore's Clinically Oriented Anatomy
R. Snell's Clinical Anatomy