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.
Fats and sugars from digestion are also turned into cholesterol by the liver to help carry energy and certain vitamins throughout the body. The liver stores iron and glycogen for use carrying oxygen and for extra energy. The liver also releases bile that goes to the intestines, aiding in the digestion of fats.