what is the descencing colon ?

Answer 1

The descending colon of humans passes downward through the left hypochondriac and lumbar regions, along the lateral border of the left kidney.

At the lower end of the kidney it turns medialward toward the lateral border of the psoas muscle, and then descends, in the angle between psoas and quadratus lumborum, to the crest of the ilium, where it ends in the sigmoid colon.

The peritoneum covers its anterior surface and sides, and therefore the descending colon is described as retroperitoneal. (The transverse colon and sigmoid colon, which are immediately proximal and distal, are intraperitoneal). Its posterior surface is connected by areolar tissue with the lower and lateral part of the left kidney, the aponeurotic origin of the transversus abdominis, and the quadratus lumborum.

It is smaller in caliber and more deeply placed than the ascending colon. It has a mesentery in 33% of people, and is therefore more frequently covered with peritoneum on its posterior surface than the ascending colon (which has a mesentery in 25% of people). However, it is less likely to undergo volvulus than the ascending colon.

In front of it are some coils of small intestine.

Answer 2

The colon is divided (more for discussion sake) into the ascending, transverse, descending, and sigmoid colon. The ascending colon is the part attached to the small intestin, and is located on the right side. The reason it is call ascending is because the material moves towards the head in this portion. The colon then makes a roughly 90 degree turn at the liver, to run transverse. It then makes another 90 degree turn by the spleen to become the descending (the material moves towards the butt). The sigmoid is S-shaped. Attached to the ascending colon is the cecum and appendix, and attached to the sigmoid is the rectum and anus.

Answer 3

The large intestine, or colon, consists of ascending, transverse, descending, and sigmoid portions.

The ascending portion extends from the cecum superiorly along the right abdominal wall to the inferior surface of the liver and bends sharply at a right angle to the left at a curve called the hepatic flexure.

From there, it crosses the abdominal cavity as the transverse colon to the left abdominal wall at the splenic flexure and begins the DESCENDING COLON which traverses inferiorly along the left abdominal wall to the pelvic region.

The colon then forms an angle medially from the pelvis to form an s-shaped curve called the sigmoid colon. The last few inches of the colon is the rectum which is a storage site for solid waste which leaves the body by way of an external opening called the anus, controlled by muscles called sphincters.

Answer 4

The descending colon of humans passes downward through the left hypochondriac and lumbar regions, along the lateral border of the left kidney.

At the lower end of the kidney it turns medialward toward the lateral border of the psoas muscle, and then descends, in the angle between psoas and quadratus lumborum, to the crest of the ilium, where it ends in the sigmoid colon.

The peritoneum covers its anterior surface and sides, and therefore the descending colon is described as retroperitoneal. (The transverse colon and sigmoid colon, which are immediately proximal and distal, are intraperitoneal). Its posterior surface is connected by areolar tissue with the lower and lateral part of the left kidney, the aponeurotic origin of the transversus abdominis, and the quadratus lumborum.

It is smaller in caliber and more deeply placed than the ascending colon. It has a mesentery in 33% of people, and is therefore more frequently covered with peritoneum on its posterior surface than the ascending colon (which has a mesentery in 25% of people). However, it is less likely to undergo volvulus than the ascending colon.

Answer 5

The descending colon of humans passes downward through the left hypochondriac and lumbar regions, along the lateral border of the left kidney

Answer 6

The descending colon of humans passes downward through the left hypochondriac and lumbar regions, along the lateral border of the left kidney.

Answer 7

The descending colon of humans passes downward through the left hypochondriac and lumbar regions, along the lateral border of the left kidney.

Answer 8

To explain in lay man terms

It is the part of the bowel and is at the left side in the tummy. starts just below the ribs and goes all the way down to left side of the waist and becomes a dilated big bowel called caecum.

It mainly contains fluid which is water and undigested food means faecal matter.

Answer 9

the right side of your colon which is directly attached to a tube from your stomach is called "the right ascending colon" the colon then goes horizontal and becomes what is called the "left descending colon" which terminates at the rectum....

Answer 10

its the descenDing colon - part of the digestive system in our bodies. the food goes through the stomach, then the small intestine where it is digested. this is the colon. the descending colon is attached to the colon and this is where excretion occurs.