The Zero Home Page. 1  In our paychecks, zeros are critical. 2  We all like to see lots of zeros lined up on a check. 3  Speaking of lines, there would be a big hole in the number line if there was no zero, you could fall through and get hurt.
[Continued from above] . . . Unlike the rest of the large intestine, however, the submucosa of the appendix contains many masses of lymphoid tissue. The presence of lymphoid tissue suggests that the appendix may play a role in the immune system in addition to the digestive system. What Does the Appendix Do? The appendix is not a vital organ and medical researchers still debate its exact function in our bodies. One hypothesis suggests that it is a vestigial remnant of a once larger cecum. This larger cecum would have been used by vegetarian ancestors to digest cellulose from plants.
The liver, pancreas, and gallbladder are the solid organs of the digestive system. The digestive system helps the body digest food, which includes breaking food down into nutrients the body needs. Nutrients are substances the body uses for energy, growth, and cell repair.