01:119:100 Chapter Notes - Chapter 21-12: Peristalsis, Rectum, Cecum

• School: Rutgers University
• Department: Biological Science
• Course: 01:119:100
• Professor: Gregory Transue

Document Summary

T-shaped junction of the small and large intestines, a sphincter controls passage into the cecum. A small finger-like extension of the cecum. Contains a mass of white blood cells that make contribution to immunity. If the junction between the appendix and the rest of the large intestine becomes blocked. Complete the reabsorption of water that was begun in the small intestine. Becomes solid as water is reabsorbed and moves along the colon via peristalsis. Takes about 12-24 hours for material to travel the length of the colon. Indigestible plant fivers, and prokaryotes that live in the colon. Feces is stored in the final portion of the colon until eliminated. Contractions of the colon create the urge to defecate. 2 sphincters (one voluntary; one involuntary) regulate the opening of the anus.