The upper esophageal sphincter relaxes during the pharyngeal phase of swallowing and is pulled open by the forward movement of the hyoid bone and larynx. … The pharyngeal phase of swallowing is involuntary and totally reflexive, so no pharyngeal activity occurs until the swallowing reflex is triggered.

What is the pharyngeal phase?

Pharyngeal phase – involuntary, movement of the bolus from the oropharynx into the esophagus. Esophageal phase – involuntary, movement of the bolus through the esophagus and into the stomach.

What are the 4 stages of the swallowing process?

There are 4 phases of swallowing:

• The Pre-oral Phase. – Starts with the anticipation of food being introduced into the mouth – Salivation is triggered by the sight and smell of food (as well as hunger)
• The Oral Phase. …
• The Pharyngeal Phase. …
• The Oesophageal Phase.

What happens during the pharyngeal phase of deglutition quizlet?

The pharyngeal phase of swallowing lasts about 1-2 seconds. During the pharyngeal phase, the vestibular folds and vocal cords close, and the epiglottis (ep-i-glot′is; on the glottis) is tipped posteriorly so that the epiglottic cartilage covers the opening into the larynx, and the larynx is elevated.

What occurs during swallowing?

The teeth grind and chop food into tiny pieces while the glands in the mouth moisten it with saliva. Then the tongue pushes the moistened food, or bolus, to the back of the throat and down into the esophagus, which leads to the stomach.

What is the process of swallowing called?

The process of swallowing, also known as deglutition, involves the movement of substances from the mouth (oral cavity) to the stomach via the pharynx and esophagus.

What are the 3 stages of swallowing?

Anatomically, swallowing has been divided into three phases: oral, pharyngeal, and esophageal. The oral phase includes preparatory as well as early transfer phases.

What is pharyngeal phase dysphagia?

During this phase, called the pharyngeal phase, the larynx (voice box) closes tightly and breathing stops to prevent food or liquid from entering the airway and lungs. The third stage begins when food or liquid enters the esophagus, the tube that carries food and liquid to the stomach.