Summative A. Write the word TRUE if the underlined word in the statement gives a correct concept to the statement itself. If it makes the concept of the statement false, change it with the most appropriate word to achieve a correct concept.

1. Dengue is a viral infection of the upper respiratory tract caused by many different viruses.

2. Ulcer is a chronic inflammatory disorder of the airways characterized by episodes of reversible breathing problems due to airway narrowing and obstruction.

3. Chronic obstructive pulmonary disease (COPD) is a preventable and treatable disease characterized by airflow limitation that is not fully reversible.

4. Intestinal diseases refer to diseases involving the gastrointestinal tract, namely the esophagus, stomach, small intestine, large intestine, and rectum, and the accessory organs of digestions, the liver, gallbladder, and pancreas.​