Which term refers to the inability to swallow?

The term that refers to the inability to swallow is "aphagia." This condition can occur as a result of various medical issues affecting the muscles and nerves involved in the swallowing process or due to obstructions in the throat or esophagus. Aphagia can lead to significant health concerns, including malnutrition and aspiration pneumonia, as individuals may be unable to consume food or liquids safely.

Other terms listed do not pertain to the swallowing mechanism. An aneurysm refers to an abnormal bulge in the wall of a blood vessel. Anorexia is a condition characterized by a lack of appetite or refusal to eat, often associated with psychological issues. An angiogram is a medical imaging technique used to visualize the inside of blood vessels. These definitions help clarify the distinct nature of each term in relation to the act of swallowing and highlight why "aphagia" is the correct choice.