Question

Involuntary muscular tissue forms wall of which one of the following organs?

• A. Intestine
• B. Stomach
• C. Bronchi
• D. All of the above

Answer 1

The correct option is D All of the above

The intestine is a part of the alimentary canal. The food movement, nutrient absorption, and waste disposal are carried out by the intestine. The muscles involved in making walls of the intestine are smooth and involuntary.
Muscles of the stomach contract periodically to enhance the food digestion. This process is not controlled by conscious will. Hence, smooth and involuntary muscles are present in the stomach wall.
Bronchi carry air to the lungs. The smooth muscles are present in bronchi, which regulates airflow into the lungs. This process is also involuntary. Hence, smooth muscles are also seen in bronchi walls. Therefore, option D is correct.