SWALLOWING OR DEGLUTITION - ANATOMY AND PHYSIOLOGY

Swallowing, also known as deglutition, is the name for the process by which food goes from mouth to pharynx to esophagus. Swallowing has three phases - the oral, or buccal phase, the pharyngeal phase, and the esophageal phase. The oral phase is the only voluntary part of swallowing. After food has been chewed and moistened with saliva, the resulting bolus is pushed to the back of the throat, called the pharynx, by the tongue. This involves the tongue rolling back to prevent food from going forward into the mouth. As this happens, the soft palate rises to prevent food from entering the nasal cavity. The pharyngeal phase begins when receptors in the oropharynx are stimulated. This triggers initiation of the swallow reflex, which is involuntary. This part of swallowing must be coordinated perfectly, because the pharynx is the entrance to both the esophagus and the trachea. While the esophagus leads to the stomach, the trachea leads to the lungs. The vocal folds are located in the larynx, which is at the top of the trachea. The vocal cords close and the larynx gets pulled up as the epiglottis flips over the entrance to the trachea. The upper esophageal sphincter opens to allow the bolus to enter the esophagus. During the esophageal phase, food is propelled down the esophagus towards the stomach by waves of muscular contractions known as peristalsis. The larynx moves back down and the epiglottis flips back up so respiration can resume.

[@Rationalist101]

You learn something new everyday

[@dailydoseofmedicinee]

Short and informative

[@biologyaccountonly6760]

I love this channel. I'll try to watch whenever I have free time 😅😅

[@Mbbsmedicos]

Thank you ❤.
Best short video of deglutition

[@mr.safecharliedefensivedri9741]

Explaining,how I eat my Food, kudos and thank you.

[@lianxie5582]

Fantastic presentation!

[@adarshrai4112]

Swallowed this lecture perfectly 👍🏼

[@Lonyw]

You mean deglutitioned

[@bloodlessmist]

Precise, concise to the point and informational. Thanks for the help! 🤍

[@sabrinajones1573]

I LOVE the art!!!

[@wolverine3422]

Very good 👍

[@genoramirez4204]

Wow, amazing

[@mister-accomplished]

Bro kamaal

[@pallavichoubey18]

Lecture perfect ❤

[@pubjlover1204]

Very helpful

[@monikaarya6290]

Thank you very much 🙏🏻

[@haniatariq8374]

Best❤

[@shahriar2244]

Nice

[@SophiaMeshark-ij1db]

Perfect 😅

[@user-xz8do7qe5p]

Salute man ❤

[@user-mq8bv1fj4d]

Could i present the video in my presentation?

[@theicequeen7977]

Perfect ❤

[@annelowe2691]

Can I please use this video in one of my videos on my UA-cam channel? I am a voice teacher and specialize in vocal anatomy and physiology. I'd be very grateful to hear from you as to how this can happen. Anne Lowe Voice Generation.

[@theicequeen7977]

Try to email him?

[@kingdj0945]

Don’t over think it happens to me all the time but take deep breaths

[@apurbasardar6124]

What does “raising of larynx” mean? It doesn’t look like it is getting pulled up.

[@JOELCHONGOfficial]

Imagine your adam's apple moves up during swallowing and moves down after the food is swallowed completely. That is because your epiclottis bends (it pulls the larynx during the process). Hope this helps!

[@miltonjovany8132]

Who designed humans like this? It's an easy fix, just have 2 tubes. One for respiration and the other for swallowing

[@ironmenvagas5917]

who set this security system

[@heroicplaysmc]

I accidently swallowed a ball bearing sadly yesturday

[@choulox437]

0:03 🤫🧏

[@drallersouldust3054]

I think I've swallowed a stick

[@insulin801]

Sphincter