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The lower part of the external hemorrhoidal plexus is drained by the inferior rectal veins (or inferior hemorrhoidal veins) into the internal pudendal vein. Veins superior to the middle rectal vein in the colon and rectum drain via the portal system to the liver. Veins inferior, and including, the middle rectal vein drain into systemic ...
According to the 8th edition of Clinically Oriented Anatomy (2017), the internal rectal plexus is drains mostly into the superior rectal vein superior/proximal to the pectinate line, and into the inferior rectal veins (→internal pudendal vein→internal iliac vein→common iliac vein→inferior vena cava) around the margin of the external ...
superior rectal artery: middle and inferior rectal arteries Vein: superior rectal vein draining into the inferior mesenteric vein and subsequently the hepatic portal system: middle and inferior rectal veins Hemorrhoids classification: internal hemorrhoids (not painful) external hemorrhoids (painful) Nerves: inferior hypogastric plexus: pudendal ...
Blood from the superior portion of the rectum normally drains into the superior rectal vein and via the inferior mesenteric vein to the liver as part of the portal venous system. Blood from the middle and inferior portions of the rectum is drained via the middle and inferior rectal veins.
The inferior mesenteric vein begins in the rectum as the superior rectal vein (superior hemorrhoidal vein), which has its origin in the hemorrhoidal plexus, and through this plexus communicates with the middle and inferior hemorrhoidal veins. The superior rectal vein leaves the lesser pelvis and crosses the left common iliac vessels with the ...
The “Yellowstone” prequel “1923” is branching out into new territory. Starting this December, new and existing “1923” viewers will have a another way to watch the series when it hits ...
Before you dive into a new cardio routine, figure out your resting heart rate (RHR), says Carnation. For most people, it’s somewhere between 60 and 100 beats per minute (BPM).
They run lateralward on the pelvic surface of the levator ani to end in the internal iliac vein. Veins superior to the middle rectal vein in the colon and rectum drain via the portal system to the liver. Veins inferior, and including, the middle rectal vein drain into systemic circulation and are returned to the heart, bypassing the liver. [1]