Classification of Organization of Haustral Rows

Three distinct rows of haustral sacculations are thus produced (Fig. 15-5), which can be referred to by the taeniae that give their form:

1. TM-TO. In the transverse colon, this row provides the superior (mesenteric) contour. Here the haustra bear two important relationships: (a) they face the inferior recess of the lesser sac, providing its lower boundary, and

Fig. 15—7. Postmortem double-contrast radiograph marked in situ with metallic clips.

The change in both course and relative position between the ascending, transverse, and descending colon is shown. A = taenia libera; B = taenia omentalis; C = taenia mesocolica.

(Reproduced from Meyers et al.1)

Fig. 15—7. Postmortem double-contrast radiograph marked in situ with metallic clips.

The change in both course and relative position between the ascending, transverse, and descending colon is shown. A = taenia libera; B = taenia omentalis; C = taenia mesocolica.

(Reproduced from Meyers et al.1)

Double Contrast Barium EnemaTaenia Libera

Fig. 15—8. Double contrast barium enema examination.

Supine projection. The three taeniae and the organization of the haustra into three identifiable rows are clearly shown. TL = taenia libera; TO = taenia omen-talis; TM = taenia mesocolica. (Reproduced from Meyers et al.1)

(b) they are in most direct continuity with the gastrocolic ligament extending downward from the stomach.

In the ascending and descending colon, these saccu-lations occupy the posterior third. This row of haustra is unique in that their contour completely faces extra-peritoneal structures only.

2. TM-TL. In the transverse colon, this haustral row faces posteriorly and is in most direct continuity with the transverse mesocolon.

In the ascending and descending colon, these haustra constitute the medial third of the colonic contour (mes-enteric border) and are in relation to the shallow intra-peritoneal recess of the medial paracolic gutter.

3. TO-TL. In the transverse colon, this group of sac-culations provides the inferior (antimesenteric) contour and is the most anterior row. It is thus in relation to the greater omentum and anterior abdominal wall.

In the ascending and descending colon, these haustra constitute the lateral (antimesenteric) contour and are in most intimate relationship to the deep intraperitoneal lateral paracolic gutter.

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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