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.
MOUTH. STOMACH. INTESTINES. FIND OUT MORE. The job of the digestive system is to break down the food we eat into smaller units called nutrients. The nutrients are then absorbed into the bloodstream and fuel the bodyâs activities. The MOUTH takes in food and begins the digestive process, which continues in the STOMACH.TOMACH. INTESTINES. FIND OUT MORE. The job of the digestive system is to break down the food we eat into smaller units called nutrients. The nutrients are then absorbed into the bloodstream and fuel the bodyâs activities.