Four Types of Cecum
The four types of cecum. Type I is the infantile form which persists throughout life, in about 2 percent of cases. In Type II the conical cecum had become quadrate by the growing out of a saccule on either side of the anterior longitudinal band. The saccules are of equal side, and the appendix arises from between them instead of from the apex of a cone. This type is found in 3 percent of cases. Type III is the normal type of man. Here the two saccules, which in the second type were uniform, have grown at unequal rates, the right with greater rapidity than the left. This type occurs in about 90 percent of cases. Type IV is merely an exaggerated condition of the third; the right saccule is still larger, and at the same time the left saccule had been atrophied, so that the original apex of the cecum, with the appendix, is close to the ileocecal junction, and the anterior band courses inward to the same situation. This type is present in about 4 percent of cases.
GalleriesHuman Digestive System
Gray, Henry Gray's Anatomy: Descriptive and Applied (Philadelphia: Lea & Febiger, 1913) 1298