Motor Function of the Pharynx, Esophagus, and Its Sphincters PDF Download
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Author: Ravinder Mittal
Publisher: Morgan & Claypool Publishers
ISBN: 1615043330
Category : Medical
Languages : en
Pages : 87
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Book Description
Deglutition or a swallow begins as a voluntary act in the oral cavity but proceeds autonomously in the pharynx and esophagus. Bilateral sequenced activation and inhibition of more than 25 pairs of muscles of mouth, pharynx, larynx, and esophagus is required during a swallow. A single swallow elicits peristalsis in the pharynx and esophagus along with relaxation of upper and lower esophageal sphincters. Multiple swallows, at closely spaced time intervals, demonstrate deglutitive inhibition; sphincters remain relaxed during the entire period, but only the last swallow elicits peristalsis. Laryngeal inlet closure or airway protection is very important during swallow. Upper part of the esophagus that includes upper esophageal sphincter is composed of skeletal muscles, middle esophagus is composed of a mixture of skeletal and smooth muscles, and lower esophagus, including lower esophageal sphincter, is composed of smooth muscles. Peristalsis progresses in seamless fashion, despite separate control mechanism, from the skeletal to smooth muscle esophagus. The esophagus's circular and longitudinal muscle layers contract synchronously during peristalsis. Sphincters maintain continuous tone; neuromuscular mechanisms for tonic closure in the upper and lower esophageal sphincters are different. Lower esophageal sphincter transient relaxation, belching mechanism, regurgitation, vomiting, and reflux are mediated via the brain stem. Table of Contents: Introduction / Central Program Generator and Brain Stem / Pharynx-Anatomy, Neural Innervation, and Motor Pattern / Upper Esophageal Sphincter / Neuromuscular Anatomy of Esophagus and Lower Esophageal Sphincter / Extrinsic Innervation: Parasympathetic and Sympathetic / Interstitial Cells of Cajal / Recording Techniques / Motor Patterns of the Esophagus-Aboral and Oral Transport / Deglutitive Inhibition and Muscle Refractoriness / Peristalsis in the Circular and Longitudinal Muscles of the Esophagus / Neural and Myogenic Mechanism of Peristalsis / Central Mechanism of Peristalsis-Cortical and Brain Stem Control / Peripheral Mechanisms of Peristalsis / Central Versus Peripheral Mechanism of Deglutitive Inhibition / Neural Control of Longitudinal Muscle Contraction / Modulation of Primary and Secondary Peristalsis / Neural Control of Lower Esophageal Sphincter and Crural Diaphragm / Lower Esophageal Sphincter / Swallow-Induced LES Relaxation / Crural Diaphragm Contribution to EGJ and Neural Control / Transient LES Relaxation and Pharmacological Inhibition / Compliance of the EGJ / References
Author: Ravinder Mittal
Publisher: Morgan & Claypool Publishers
ISBN: 1615043330
Category : Medical
Languages : en
Pages : 87
Get Book Here
Book Description
Deglutition or a swallow begins as a voluntary act in the oral cavity but proceeds autonomously in the pharynx and esophagus. Bilateral sequenced activation and inhibition of more than 25 pairs of muscles of mouth, pharynx, larynx, and esophagus is required during a swallow. A single swallow elicits peristalsis in the pharynx and esophagus along with relaxation of upper and lower esophageal sphincters. Multiple swallows, at closely spaced time intervals, demonstrate deglutitive inhibition; sphincters remain relaxed during the entire period, but only the last swallow elicits peristalsis. Laryngeal inlet closure or airway protection is very important during swallow. Upper part of the esophagus that includes upper esophageal sphincter is composed of skeletal muscles, middle esophagus is composed of a mixture of skeletal and smooth muscles, and lower esophagus, including lower esophageal sphincter, is composed of smooth muscles. Peristalsis progresses in seamless fashion, despite separate control mechanism, from the skeletal to smooth muscle esophagus. The esophagus's circular and longitudinal muscle layers contract synchronously during peristalsis. Sphincters maintain continuous tone; neuromuscular mechanisms for tonic closure in the upper and lower esophageal sphincters are different. Lower esophageal sphincter transient relaxation, belching mechanism, regurgitation, vomiting, and reflux are mediated via the brain stem. Table of Contents: Introduction / Central Program Generator and Brain Stem / Pharynx-Anatomy, Neural Innervation, and Motor Pattern / Upper Esophageal Sphincter / Neuromuscular Anatomy of Esophagus and Lower Esophageal Sphincter / Extrinsic Innervation: Parasympathetic and Sympathetic / Interstitial Cells of Cajal / Recording Techniques / Motor Patterns of the Esophagus-Aboral and Oral Transport / Deglutitive Inhibition and Muscle Refractoriness / Peristalsis in the Circular and Longitudinal Muscles of the Esophagus / Neural and Myogenic Mechanism of Peristalsis / Central Mechanism of Peristalsis-Cortical and Brain Stem Control / Peripheral Mechanisms of Peristalsis / Central Versus Peripheral Mechanism of Deglutitive Inhibition / Neural Control of Longitudinal Muscle Contraction / Modulation of Primary and Secondary Peristalsis / Neural Control of Lower Esophageal Sphincter and Crural Diaphragm / Lower Esophageal Sphincter / Swallow-Induced LES Relaxation / Crural Diaphragm Contribution to EGJ and Neural Control / Transient LES Relaxation and Pharmacological Inhibition / Compliance of the EGJ / References
Author: Xiaoying Zhou
Publisher: BoD – Books on Demand
ISBN: 1789852641
Category : Medical
Languages : en
Pages : 250
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Book Description
Pharynx - Diagnosis and Treatment provides scientific views from international experts on the latest studies and consensus in pharynx diseases, in particular pharyngeal tumors, including oropharyngeal carcinoma, nasopharyngeal carcinoma, hypopharyngeal carcinoma, and others. The book also addresses non-tumoral pharyngeal diseases such as nasopharyngeal angiofibroma and obstructive sleep apnea. The chapters present guidelines and standards commonly used in clinics for the pharynx diseases mentioned, as well as new updates covering recent scientific findings and translational research on the approaches of diagnosis and treatment.
Author: David A. Morton
Publisher: McGraw Hill Professional
ISBN: 0071785345
Category : Medical
Languages : en
Pages : 513
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Book Description
Get the BIG PICTURE of Gross Anatomy in the context of healthcare – and zero-in on what you really need to know to ace the course and board exams! Gross Anatomy: The Big Picture is the perfect bridge between review and textbooks. With an emphasis on what you truly need to know versus “what’s nice to know,” it features 450 full-color illustrations that give you a complete, yet concise, overview of essential anatomy. The book’s user-friendly presentation consists of text on the left-hand page and beautiful full-color illustrations on the right-hand page. In this way, you get a “big picture” of anatomy principles, delivered one concept at a time -– making them easier to understand and retain. Striking the perfect balance between illustrations and text, Gross Anatomy: The Big Picture features: High-yield review questions and answers at the end of each chapter Numerous summary tables and figures that encapsulate important information 450 labeled and explained full-color illustrations A final exam featuring 100 Q&As Important clinically-relevant concepts called to your attention by convenient icons Bullets and numbering that break complex concepts down to easy-to-remember points
Author: Olle Ekberg
Publisher: Springer Science & Business Media
ISBN: 3642188389
Category : Medical
Languages : en
Pages : 263
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Book Description
All aspects of radiology of the pharynx and esophagus are coverd in detail. The text covers anatomy, physiology, examination techniques, and describes all relevant disease entities. However, it also considers endoscopic and manometric aspects of interest to the radiologist. Moreover, it has a broad clinical approach, encompassing not only analysis of symptoms but also topics such as the social and mental burden of dysphagia. Interventions in the esophagus from the radiologist's and the endoscopist's points of view are also addressed. The authors are all renowned experts in their field. Although it is assumed that most readers will be radiologists, much information will be of interest to other specialists involved in the evaluation and treatment of dysphagia, including ENT surgeons, thoracic surgeons, thoracic surgeons, speech and language pathologists, phoniatricians, gastroenterologists, and neurologists.
Author: Steven B. Leder
Publisher: Springer
ISBN: 3319298992
Category : Medical
Languages : en
Pages : 108
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Book Description
This text is a reliable, validated, anatomically defined, and image-based tool to determine residue location and severity when performing fiberoptic endoscopic evaluation of swallowing (FEES). Based upon research by Drs. Leder and Neubauer, an easily interpreted, readily learned, and hierarchically organized pharyngeal residue severity rating scale was developed for speech-language pathologists, otolaryngologists, and other health care professionals who perform and interpret FEES. The Yale Pharyngeal Residue Severity Rating Scale works equally well for any swallow of interest, whether it is the first, subsequent clearing, or last swallow. The endoscopist simply has to match their chosen swallow with its scale mate. The Yale Pharyngeal Residue Severity Rating Scale can be used for both clinical advantages and research opportunities. Clinically, clinicians can now accurately classify vallecula and pyriform sinus residue severity as none, trace, mild, moderate, or severe for diagnostic purposes, determination of functional therapeutic change, and precise dissemination of shared information. Research uses include tracking outcomes for clinical trials, investigating various swallowing interventions, demonstrating efficacy of specific interventions to reduce pharyngeal residue, determining morbidity and mortality associated with pharyngeal residue in different patient populations, and improving the training and accuracy of FEES interpretation by students and clinicians. The Yale Pharyngeal Residue Severity Rating Scale is an important addition to the deglutologist’s tool box.
Author: Émile Jean Moure
Publisher:
ISBN:
Category : Larynx
Languages : en
Pages : 424
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Book Description
Author: Luis M. Rubio-Martinez
Publisher: John Wiley & Sons
ISBN: 1119190088
Category : Medical
Languages : de
Pages : 896
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Book Description
Complications in Equine Surgery is the first reference to focus exclusively on understanding, preventing, recognizing, managing, and prognosing, technical and post-procedural complications in equine surgery. Edited by two noted experts on the topic, the book presents evidence-based information using a clear approach, organized by body system. Featuring color images, the book contains detailed coverage of the gastrointestinal, respiratory, musculoskeletal, urogenital, and neurological systems. Each chapter contains a short introduction of the procedure with explanations of when and how the procedure is to be performed. All chapters review how to recognize and prevent technical complications and explain how to manage post-operative complications. This important text: Offers the first resource specifically focused on complications encountered in equine surgery Takes a helpful format organized by body system Provides consistently formatted chapters for ease of use Covers clinically relevant information for dealing with technical and post-operative complications Presents more than 350 color images to illustrate the concepts described Written for general practitioners and specialists, Complications in Equine Surgery is an essential resource to decreasing morbidity and mortality and increasing surgical success in horses.
Author: Zerina Johanson
Publisher: Cambridge University Press
ISBN: 1107179440
Category : Nature
Languages : en
Pages : 283
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Book Description
World-class palaeontologists and biologists summarise the state-of-the-art on fish evolution and development.
Author: Vishram Singh
Publisher: Elsevier Health Sciences
ISBN: 8131241424
Category : Medical
Languages : en
Pages : 48
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Book Description
Pharynx and Palate Pharynx and Palate
Author:
Publisher:
ISBN:
Category : Cancer
Languages : en
Pages : 322
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Book Description
