Respiration, Digestion, and Excretion Question
View this question.
Add this question to a group or test by clicking the appropriate button below.
Humans have an appendix, a thin tube connected to the large intestine that serves no purpose and is a threat to human life and health if it becomes infected or inflamed. It is believed that the appendix once had a function as part of the human digestive system. The human appendix, therefore, is
- a mutation.
- a vital organ.
- a vestigial organ.
- a homologous structure.
- none of the above