What is the Difference Between Ascending and Descending Colon?

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The ascending and descending colons are two main parts of the large intestine, which plays a crucial role in the digestive system. They have distinct functions and anatomical locations:

  • Ascending Colon: This part of the colon travels up the right side of the abdomen. It is responsible for absorbing the remaining water and other key nutrients from the indigestible material, solidifying it to form stool. The ascending colon is sometimes referred to as the right colon.
  • Descending Colon: This part of the colon travels down the left side of the abdomen. Its primary function is to store feces that will eventually be emptied into the rectum. The descending colon is sometimes referred to as the left or sigmoid colon.

In summary, the main difference between the ascending and descending colons is their location and function. The ascending colon is responsible for absorbing water and nutrients, while the descending colon stores feces until they are emptied into the rectum.

Comparative Table: Ascending vs Descending Colon

The ascending and descending colon are two main parts of the colon, also known as the large bowel or large intestine. They play a crucial role in the digestive system, dehydrating the remnants of food and forming it into a stool. Here are the main differences between the ascending and descending colon:

Feature Ascending Colon Descending Colon
Location Travels up the right side of the abdomen Travels down the left side of the abdomen
Position Begins at the cecum and ascends superiorly until it meets the right lobe of the liver, where it turns 90 degrees to move horizontally as the transverse colon Begins at the left colic flexure and moves inferiorly towards the pelvis
Function Mainly involved in dehydrating the remnants of food and forming it into a stool Also involved in dehydrating the remnants of food and forming it into a stool
Neurovascular Supply Supplied by branches of the right colic artery (from the superior mesenteric artery) and the right branch of the middle colic artery Supplied by branches of the middle colic artery (from the superior mesenteric artery) and the left branch of the middle colic artery

In summary, the ascending colon travels up the right side of the abdomen and is involved in dehydrating food remnants, while the descending colon travels down the left side of the abdomen and serves a similar function. Both parts of the colon are supplied by different branches of the colic arteries.