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The spleen (from Anglo-Norman espleen, ult. from Ancient Greek σπλήν, splḗn) [1] is an organ found in almost all vertebrates. Similar in structure to a large lymph node , it acts primarily as a blood filter.
In human anatomy, the splenic artery or lienal artery, an older term, is the blood vessel that supplies oxygenated blood to the spleen. It branches from the celiac artery, and follows a course superior to the pancreas. It is known for its tortuous path to the spleen.
To Aristotle this explains why dead things become cold, do not breathe, and that their souls have left them. Because the heart is the location of the human soul and life force, it is the organ of utmost importance in Aristotelian physiology. Correspondingly, the heart is the first organ to appear during embryonic development. [4]
The trabecular arteries are the name of the branches of the splenic artery after it passes into the trabeculae of the spleen, where it branches.When these arteries then reach the white pulp, and become covered with periarteriolar lymphoid sheaths, the name changes again to central arteries (or central arterioles).
It is a crescent-shaped space, encompassed by the lower edge of the left lung, the anterior border of the spleen, the left costal margin and the inferior margin of the left lobe of the liver. Thus, its surface markings are respectively the left sixth rib superiorly, the left mid axillary line laterally, and the left costal margin inferiorly.
The spleen, and organs of the urinary system including the kidneys, and adrenal glands also lie within the abdomen, along with many blood vessels including the aorta and inferior vena cava. The urinary bladder , uterus , fallopian tubes , and ovaries may be seen as either abdominal organs or as pelvic organs.
Doctors discovered he had a rare wandering spleen that was resting on his stomach. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. Sign in ...
The left kidney sits below the diaphragm and posterior to the spleen. On top of each kidney is an adrenal gland . The upper parts of the kidneys are partially protected by the 11th and 12th ribs .