In which part of the human body do adult tapeworms typically reside?

Adult tapeworms typically reside in the small intestine of humans. This location is crucial for their lifecycle and nutrition. The small intestine provides a suitable environment where the tapeworm can absorb nutrients from the host's digested food. The structure and length of the small intestine facilitate this absorption, allowing the tapeworm to thrive and grow by using the host's nutrients.

The small intestine's relatively high nutrient concentration makes it the ideal habitat for these parasitic organisms. Furthermore, adult tapeworms attach themselves to the intestinal lining using their scolex, enabling them to remain in place while they absorb nutrients.

Other parts of the digestive system, such as the stomach, colon, and large intestine, are not typical habitats for adult tapeworms, as these areas do not provide the same optimal conditions for sustaining an adult tapeworm's growth and reproductive cycle.