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Mechanics of swallowing, diagram
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Mechanics of swallowing, diagram
Mechanics of swallowing. Cutaway diagrams showing the process of swallowing. At left the mouthful of food (the bolus, green) is being pushed to the back of the mouth by the tongue. At right, the contraction of muscles in the throat have pushed the tongue right up against the roof of the mouth, and folded the epiglottis over the entrance to the trachea. This prevents food from entering the lungs. The bolus is passing the epiglottis and is entering the oesophagus. In the oesophagus, smooth muscle contractions take the food down to the stomach (not seen)
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6450143
© PETER GARDINER/SCIENCE PHOTO LIBRARY
Airway Art Works Biomechanical Biomechanics Cross Section Cut Away Diagram Diagrams Digestion Digestive System Epiglottis Gullet Mechanical Mechanics Mouth Muscle Contraction Muscles Oesophagus Physiological Physiology Process Protection Protective Swallow Swallowing Throat Tissue Tongue Trachea Tract Wind Pipe Bolus Flap Mouthful Section Sectioned
EDITORS COMMENTS
This print from Science Photo Library showcases the intricate mechanics of swallowing in a visually stunning manner. The cutaway diagrams provide a detailed insight into the process, highlighting its importance as a protective mechanism for our bodies. On the left side of the image, we observe a mouthful of food, known as the bolus, being propelled towards the back of the mouth by an active tongue. This initial movement sets off a chain reaction that ensures our safety during swallowing. As we shift our attention to the right side, we witness an extraordinary sequence unfold. The contraction of muscles in the throat pushes the tongue firmly against the roof of our mouths while simultaneously folding over a crucial flap called epiglottis. This ingenious maneuver effectively seals off any potential entry points to our delicate trachea and lungs, preventing food from accidentally entering these vital airways. As this protective barrier is established, we witness with awe how seamlessly and effortlessly it allows passage for food into another essential structure -the oesophagus. Smooth muscle contractions within this muscular tube then take charge and propel nourishment down towards its final destination: our stomachs. Through this remarkable illustration, we gain deeper appreciation for both human anatomy and physiology involved in something as seemingly simple as swallowing. It serves as a reminder that even mundane bodily functions are orchestrated with incredible precision to ensure our well-being on a daily basis.
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