Diagram Of Swallowing Anatomy

Next is the pharyngeal phase of swallowing. Swallowing is the process by which food moves from the mouth to the stomach.

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Swallowing refers to the entire act of deglutition from placement of food in the mouth through the oral and pharyngeal stages of the swallow until the material enters the esophagus through the cricopharyngeal juncture.

Diagram of swallowing anatomy. Eating and swallowing are compex behaviors including both volitional and reflexive activities involving more than 30 nerves and muscles. This movement is controlled by the nervous system and involves both voluntary and involuntary muscle contractions. During the oral phase the upper esophageal sphincter is closed and food will not be able to pass in the esophagus until it is open.

The swallowing center then outputs signals to initial and control the next two phases of swallowing the pharyngeal phase and the esophageal phase. Deglutition process of swallowing oropharyngeal dysphagia oral pharyngeal espohageal anatomy esopharyngeal dysphagia. The throat anatomy diagram divides the pharynx into three parts the nasopharynx the oropharynx and the laryngopharynx.

Unlike the oral phase the pharyngeal phase is an involuntary process. The anatomy of the oral cavity pharynx larynx and innervations of the muscles are shown in figure 1 and table 1. The nasopharynx is the uppermost part of the pharynx and extends down from the base of the skull to the nasal passages hence the name.

This process is under neural control of several areas of cerebral cortex including the motor cortex. Learn vocabulary terms and more with flashcards games and other study tools. Pharyngeal phase starts with stimulation of tactile receptors in the oropharynx by the food bolus.

The tongue has both oral and pharyngeal surfaces. The swallow reflex is initiated and is under involuntary neuromuscular control. Swallowing consists of three phases.

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