Often asked: Anatomy Of The Throat When Swallowing?

What anatomical parts are necessary for swallowing?

They have two crucial biological features: food passage from the oral cavity to stomach and airway protection. The swallowing process is commonly divided into oral, pharyngeal, and esophageal stages according to the location of the bolus.

What are the 4 stages of swallowing?

The Four Phases of the Normal Adult Swallow Process

  • Oral Preparatory Phase.
  • Oral Transit Phase.
  • Pharyngeal Phase.
  • Esophageal Phase.

What muscles are responsible for swallowing?

These muscles include the omohyoid, sternohyoid, and sternothyroid muscles (ansa cervicalis), and the thyrohyoid muscle (CN XII). [17] The longitudinal pharyngeal muscles function to condense and expand the pharynx as well as help elevate the pharynx and larynx during swallowing.

Which side of the throat is the esophagus on?

The oropharynx is the area at the middle of the throat behind the mouth. The hypopharynx is the area at the lower part of the throat. The esophagus is the tube that carries food and liquids from the throat to the stomach.

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Are neck muscles used to swallow?

Muscles of the neck play important roles in mastication (chewing), swallowing, speaking and supporting and moving the head. All muscles found in the neck are paired, meaning they exist to both the left and right side of the spine.

What nerves are involved in swallowing?

The following cranial nerves are involved in swallowing:

  • Trigeminal (cranial nerve V)
  • Facial (cranial nerve VII)
  • Glossopharyngeal (cranial nerve IX)
  • Vagus (cranial nerve X)
  • Hypoglossal nerve (cranial nerve XII)

How do you trigger a swallow?

Ice massage with an ice stick applied to the throat, base of the anterior faucial arches, base of the tongue, and posterior pharyngeal wall is widely used in Japan as a prefeeding technique to induce dry swallowing, to stimulate swallowing apraxia for initiating the swallow action, and in daily swallowing training.

What is the swallowing process?

Swallowing is the process by which food is transported from the mouth to the stomach. The transport phase includes transport of the swallowed food bolus through the esophagus into the stomach. Anatomically, swallowing has been divided into three phases: oral, pharyngeal, and esophageal.

What happens when we swallow?

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 happens during swallowing reflex?

The swallowing reflex, which is mediated by the swallowing center in the medulla (the lower part of the brainstem), causes the food to be further pushed back into the pharynx and the esophagus (food pipe) by rhythmic and involuntary contractions of several muscles in the back of the mouth, pharynx, and esophagus.

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What is the esophageal phase of swallowing?

In the esophageal phase, the bolus is propelled downward by a peristaltic movement. The lower esophageal sphincter relaxes at initiation of the swallow, and this relaxation persists until the food bolus has been propelled into the stomach.

What happens to the larynx during swallowing?

When you swallow, a flap called the epiglottis moves to block the entrance of food particles into your larynx and lungs. The muscles of the larynx pull upward to assist with this movement. They also tightly close during swallowing. That prevents food from entering your lungs.

What is on the sides of your throat?

The tonsils are round balls of lymphatic tissue in the back of your throat. You have two tonsils, one on each side of your throat, just behind your tongue. Sometimes tonsillitis only affects one tonsil, creating a sore throat on one side.

Why does the back of my throat hurt when I swallow?

Strep throat, epiglottitis, and esophagitis are some possible causes of pain when swallowing. Throat infections are one of the most common causes of pain when swallowing. These include strep throat, which is an infection with Streptococcal bacteria.

How long does food stay in esophagus?

Instead, muscles in the walls of the esophagus move in a wavy way to slowly squeeze the food through the esophagus. This takes about 2 or 3 seconds.

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