What part of the chicken's digestive system follows the proventriculus?

The correct answer is the gizzard, which is indeed the part of the chicken's digestive system that follows the proventriculus. The proventriculus, often referred to as the glandular stomach, is responsible for secreting digestive enzymes and acids that initiate the breakdown of food. After food passes through the proventriculus, it moves into the gizzard, which is a muscular organ where the food is further processed.

The gizzard plays a crucial role in digestion, as it grinds the food into smaller pieces, often aided by any grit the chicken has ingested. This mechanical digestion is essential, especially since chickens do not have teeth to chew their food. By breaking down the food into finer particles, the gizzard allows for more efficient nutrient absorption in the subsequent stages of the digestive system, such as the intestines.

In summary, the gizzard's role as the next step after the proventriculus highlights its importance in the overall digestive process of chickens.