swallowing mechanisms Diagram Biology Diagrams Anatomy & Physiology of Swallowing . The act of swallowing (degluttition) is an intricate action involving the integration of a complex series of sensory and motor responses. The act of swallowing must occur in a sequential and coordinated fashion in order to propel the food bolus into the esophagus and stomach without penetration into the
This displacement tucks the larynx under the base of the tongue. The epiglottis tilts backward to seal the laryngeal vestibule. The mechanism of the epiglottic tilting in human swallowing remains unclear, but is probably related to hyo-laryngeal elevation, pharyngeal constriction, bolus movement, and tongue base retraction. 18 The structures involved with the process of swallowing include the tongue, teeth, epiglottis, and esophagus. The teeth are used to grind and chop up food int
Swallowing Biology Diagrams
Deglutition or swallowing is an innate function. Swallowing sounds like a simple physiological human function, but it is a complex, multifaceted process involving a variety of muscles and nerves. It is the starting point for the peristaltic transport of food to the stomach. Deglutition in humans can be of three distinct phases: oral phase, pharyngeal phase, and esophageal phase, of which the Normal swallowing requires a coordinated effort of over thirty muscles, the central nervous system, and five cranial nerves. Other key anatomical structures involved in this process are the nose, nasal cavity, oral cavity, and pharynx. This article explores the relevant anatomy and physiology of normal swallowing.
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. Swallowing is an essential and complex behavior learned very early in development. This pathway shares anatomy with the airway; thus, in addition to directing food into the digestive tract, the swallowing mechanism serves as a
How Swallowing Works Animation Video Biology Diagrams
swallowing, the act of passing food from the mouth, by way of the pharynx (or throat) and esophagus, to the stomach.Three stages are involved in swallowing food. The first begins in the mouth. There, food is mixed with saliva for lubrication and placed on the back of the tongue.The mouth closes, and the soft portion of the roof of the mouth (soft palate) rises so that the passageway between Swallowing, or deglutition, is a complex reflex mechanism by which food is pushed from the oral cavity into the esophagus and then pushed to the stomach. E. N. Marieb, H. Katja: Human Anatomy & Physiology, 10th edition, Pearson Education Limited (2015), p. 877-879, 891-892;
