Final answer:
Duodenal ulcers are lesions located in the duodenum, the first part of the small intestine, which is primarily responsible for chemical digestion. The option (C) is correct.
Step-by-step explanation:
Duodenal ulcers are lesions in the uppermost portion of the Small intestine. This type of peptic ulcer occurs in the duodenum, which is the first and shortest segment of the small intestine adjoining the stomach. The duodenum is critically important for chemical digestion, as it is where most chemical digestion occurs within the gastrointestinal tract.
Peptic ulcers, including duodenal ulcers, are often caused by an infection with the bacterium Helicobacter pylori. These ulcers can result in symptoms like upper abdominal pain, which frequently occurs at night and may improve with eating. The duodenum's primary function is chemical digestion, and it also plays a significant role in the absorption of nutrients. Therefore, option (C) is correct.
This question is not complete, Here I am attaching the complete question:
Duodenal ulcers are lesions in the uppermost portion of the.
A. Stomach
B. Esophagus
C. Small intestine
D. Large intestine