Ileal vessels: Difference between revisions

Latest revision as of 14:19, 21 February 2025

Ileal Vessels[edit]

The ileal vessels are a group of blood vessels that supply the ileum, which is the final and longest segment of the small intestine. These vessels are primarily branches of the superior mesenteric artery and the superior mesenteric vein.

Diagram of the superior mesenteric artery and its branches, including the ileal arteries.

Arterial Supply[edit]

The arterial supply to the ileum is primarily provided by the ileal branches of the superior mesenteric artery. The superior mesenteric artery arises from the anterior surface of the abdominal aorta just below the level of the celiac trunk.

Superior Mesenteric Artery: This artery gives off numerous branches that supply the small intestine, including the jejunum and ileum. The ileal branches are numerous and form an extensive network of anastomoses, ensuring a rich blood supply to the ileum.

Venous Drainage[edit]

The venous drainage of the ileum is through the ileal veins, which accompany the arteries and drain into the superior mesenteric vein.

Superior Mesenteric Vein: This vein collects blood from the small intestine, including the ileum, and drains into the portal vein, which then carries blood to the liver for processing.

Lymphatic Drainage[edit]

The lymphatic drainage of the ileum follows the arterial supply. Lymph from the ileum drains into the mesenteric lymph nodes, which are located along the superior mesenteric artery.

Nerve Supply[edit]

The nerve supply to the ileum is derived from the autonomic nervous system, including both sympathetic and parasympathetic fibers.

Sympathetic Innervation: Provided by the superior mesenteric plexus, which decreases intestinal motility and secretion.
Parasympathetic Innervation: Provided by the vagus nerve, which increases intestinal motility and secretion.

Related Pages[edit]

@@ Line 1: / Line 1: @@
-== Ileal Vessels ==
+REDIRECT [[Superior mesenteric artery]]
-[[File:Ileal_vessels_Gray1069.png|thumb|right|Illustration of the ileal vessels.]]
+==Ileal Vessels==
-The '''ileal vessels''' are a group of blood vessels that supply the [[ileum]], which is the final and longest segment of the [[small intestine]]. These vessels are crucial for providing the necessary blood flow to support the ileum's functions in digestion and nutrient absorption.
+The '''ileal vessels''' are a group of blood vessels that supply the ileum, which is the final and longest segment of the small intestine. These vessels are primarily branches of the [[superior mesenteric artery]] and the [[superior mesenteric vein]].
-=== Anatomy ===
+[[File:Gray1069.png|thumb|right|300px|Diagram of the superior mesenteric artery and its branches, including the ileal arteries.]]
-The ileal vessels primarily consist of branches from the [[superior mesenteric artery]] and the [[superior mesenteric vein]].
+===Arterial Supply===
-==== Arterial Supply ====
+The arterial supply to the ileum is primarily provided by the ileal branches of the [[superior mesenteric artery]]. The superior mesenteric artery arises from the anterior surface of the [[abdominal aorta]] just below the level of the [[celiac trunk]].
-The arterial supply to the ileum is provided by the ileal branches of the superior mesenteric artery. This artery arises from the [[abdominal aorta]] and supplies blood to a large portion of the [[small intestine]], including the ileum.
+* '''Superior Mesenteric Artery''': This artery gives off numerous branches that supply the small intestine, including the jejunum and ileum. The ileal branches are numerous and form an extensive network of anastomoses, ensuring a rich blood supply to the ileum.
-* '''Superior Mesenteric Artery''': The superior mesenteric artery gives off numerous branches that form an extensive network of arcades, which further divide into vasa recta that directly supply the ileum.
+===Venous Drainage===
-==== Venous Drainage ====
+The venous drainage of the ileum is through the ileal veins, which accompany the arteries and drain into the [[superior mesenteric vein]].
-The venous drainage of the ileum is through the superior mesenteric vein, which parallels the arterial supply and eventually drains into the [[portal vein]].
+* '''Superior Mesenteric Vein''': This vein collects blood from the small intestine, including the ileum, and drains into the [[portal vein]], which then carries blood to the [[liver]] for processing.
-* '''Superior Mesenteric Vein''': This vein collects blood from the ileum and other parts of the small intestine, transporting nutrient-rich blood to the liver via the portal vein.
+===Lymphatic Drainage===
-=== Function ===
+The lymphatic drainage of the ileum follows the arterial supply. Lymph from the ileum drains into the mesenteric lymph nodes, which are located along the superior mesenteric artery.
-The ileal vessels play a vital role in maintaining the health and function of the ileum by ensuring an adequate blood supply. This blood flow is essential for:
+===Nerve Supply===
-* '''Nutrient Absorption''': The ileum is responsible for absorbing vitamin B12, bile salts, and any remaining nutrients not absorbed by the [[jejunum]].
+The nerve supply to the ileum is derived from the [[autonomic nervous system]], including both sympathetic and parasympathetic fibers.
-* '''Immune Function''': The ileum contains [[Peyer's patches]], which are important for immune surveillance and response in the gastrointestinal tract.
-=== Clinical Significance ===
+* '''Sympathetic Innervation''': Provided by the [[superior mesenteric plexus]], which decreases intestinal motility and secretion.
+* '''Parasympathetic Innervation''': Provided by the [[vagus nerve]], which increases intestinal motility and secretion.
-Disorders of the ileal vessels can lead to significant clinical conditions, such as:
+==Related Pages==
-* '''Ischemia''': Reduced blood flow due to blockage or narrowing of the ileal vessels can cause ischemia, leading to pain and potential necrosis of the ileum.
-* '''Inflammatory Diseases''': Conditions like [[Crohn's disease]] can affect the blood supply to the ileum, exacerbating symptoms and complications.
-== Related Pages ==
-* [[Small intestine]]
 * [[Superior mesenteric artery]]
 * [[Superior mesenteric vein]]
+* [[Small intestine]]
+* [[Abdominal aorta]]
 * [[Portal vein]]
-* [[Crohn's disease]]
 [[Category:Anatomy of the digestive system]]
+[[Category:Vascular system]]