Question

1. waste material travels through the ____________ __________ before moving to the sigmoid colon. 18. the __________ ____________ is the final s - shaped section before waste reaches the rectum.

Explanation:

In the digestive - system, waste material travels through the descending colon before reaching the sigmoid colon. The sigmoid colon is the final S - shaped section before waste reaches the rectum.

Answer:

1. descending colon
2. sigmoid colon