Swallowing

Definition

Swallowing is the process of moving food or liquid from the mouth through the pharynx and esophagus into the stomach. It involves coordinated muscle actions in the mouth, throat, and esophagus.

5 Must Know Facts For Your Next Test

1. Swallowing has three phases: oral, pharyngeal, and esophageal.
2. The vagus nerve plays a crucial role in coordinating the swallowing reflex.
3. Dysphagia refers to difficulty or discomfort in swallowing, often seen in neurological conditions.
4. Aspiration can occur if food or liquid enters the airway during swallowing, leading to potential respiratory issues.
5. Adequate hydration and proper nutrition are essential for maintaining effective swallowing function.

Review Questions

• What are the three phases of swallowing?
• Which nerve is primarily responsible for coordinating the swallowing reflex?
• What is dysphagia and why is it significant in patients with neurological conditions?

Related terms

Dysphagia:

Difficulty or discomfort in swallowing that may be due to neurological or structural issues.

Aspiration:

The inhalation of food, liquid, or foreign material into the airway, which can cause respiratory complications.

Vagus Nerve: A cranial nerve that innervates multiple organs including those involved in swallowing; also known as cranial nerve X.