This website uses cookies to ensure you have the best experience. Learn more

Anatomy Presentation – Structures Involved In Swallowing

972 words - 4 pages

Anatomy Presentation – Structures involved in swallowing

The Pharynx

The hypopharynx is the lower portion of the pharynx. It is also known as the laryngopharynx.

There are three pharyngeal recesses: Food boluses can lodge in these recesses.

The vallecula is the space or depression between the base of the tongue and the epiglottis.

The two pyriform sinuses are located in the pharynx, beside the larynx. They are formed by the shape of muscle attachments to the pharyngeal walls.

The superior, middle, and inferior pharyngeal constrictor muscles make up the external circular layer of the pharynx.

The stylopharyngus m. and the salpingopharyngus m. make up the internal ...view middle of the document...

In the past, physicians frequently treated all types of swallowing problems by cutting the P.E. segment. This procedure is called myotomy.

The Glossopharyngeal Nerve (CN. IX)

Motor Components

It innervates the 3 salivary glands in the mouth. The saliva from these glands mixes with the chewed up food to form a bolus.

CN. IX has motor, sensory, and autonomic nervous system nerve fibers. It, along with the vagus (CN. X), provides some innervation to the upper pharyngeal constrictor muscles (Zemlin, 1997).

It innervates the stylopharyngeus muscle which elevates the larynx and pulls it forward during the pharyngeal stage of the swallow. This action also aids in the relaxation and opening of the cricopharyngeus muscle.

Sensory components

The glossopharyngeal nerve mediates all sensation, including taste, from the posterior 1/3 of the tongue.

CN. IX also carries sensation from the velum and the superior portion of the pharynx. A lesion may have impaired the gag reflex unilaterally (Zemlin, 1997).

The Vagus Nerve (CN. X)

Motor Components

The vagus is responsible for raising the velum as it innervates the glossopalatine and the levator veli palatine muscles.

The vagus along with CN. IX innervates the pharyngeal constrictor muscles.

The vagus along with CN. XI innervates the intrinsic musculature of the larynx. It is responsible for vocal fold adduction during the swallow.

The vagus also innervates the cricopharyngeus muscle.

The vagus controls the muscles involved in the esophageal stage of the swallow as well as those that control respiration. (This is the only cranial nerve that influences structures inferior to the neck.)

Sensory Component

The vagus carries sensory information from the velum and posterior and inferior portions of the pharynx.

The vagus also mediates sensation in the larynx.

Swalloing vs Gagging

The Neuroanatomy of Swallowing
(Zemlin, 1997; Logemann, 1998, 1989; Morrell, 1984; Dobie, 1978)

Definition

In the past, the...

Other Essays Like Anatomy Presentation – Structures Involved in Swallowing

The Physiology of a Neurodegenerative Disease: Huntington’s Disease

607 words - 3 pages problems, such as rigidity or muscle contracture (dystonia) c. Slow or abnormal eye movements d. Impaired gait, posture and balance e. Difficulty with the physical production of speech or swallowing f. Difficulty organizing, prioritizing or focusing on tasks g. Lack of flexibility or the tendency to get stuck on a thought, behavior or action (perseveration) h. Lack of impulse control that can result in

Belle En Het Beest Essay

580 words - 3 pages Top of Form Assignment: PRESENTATION and handout For your oral exam, you will be working as a corporate analyst for your teacher. Your main responsibility will be to develop a feasibility study outlining the parameters for possible future investment in your chosen company. This process is called Due Diligence: essentially, you will play the role of an objective third party. This means that your only loyalty is to an objective account of the

Did the progressive era go far enough? It hard to

345 words - 2 pages all food required labeling of the food or drugs ingredients to forbid any unknown ingredients.Women?s suffrage was another great thing that happened during the progressive era. Alice Paul urged that women be give the franchise which also come on the same level as the 19th amendment. The 19th amendment was that women the full voting rights. Also this era proposed an amendment barring discrimination on the base of gender.Other people involved in the

Biology Review

717 words - 3 pages how natural selection occurs? How is there evidence of evolution in each of the following fields of study: Comparative anatomy (including examples of homologous structures, vestigial structures and analogous structures; be able to provide examples and explanations of each) The fossil record Molecular comparisons Biogeography What were some of the changes that took place in the line of descent from Hyracotherium to the evolution of

The Brain 5

710 words - 3 pages The Brain By Monica Berry University of Phoenix The brain is the center of the nervous system in all vertebrate, and most invertebrate, animals. In vertebrates, the brain is located in the skull and close to the primary sensory apparatus of vision, hearing, balance, taste, and smell. I will explain the five major structures of the brain and their functions and where they are located. The nervous system is your body’s decision and

Trach Care

1802 words - 8 pages (sometimes this problem may occur at other joints, but you have been assigned a “representative” joint). Describe both the bones and muscles involved at the joint. An excellent poster will briefly but thoroughly give an overview of the joint in order to orient the reader. The bones, muscles and other structures involved will be clearly shown. A clear image of the joint will allow the audience to easily see the nature of the joint. * Present the

Exploring Endocrine, Circulatory, and Respiratory Systems

633 words - 3 pages | | | | | 2. Cardiovascular System: Observe the diagram showing the major structures of the cardiovascular (circulatory) system. Using the textbook and Virtual Library resources, fill in the following table: Cardiovascular System |Number |Name of the Structure |Major Function

35 Year Old Female With A Gunshot Wound

1716 words - 7 pages Retroperitoneal hematoma Blood contained w/in or emanating from the retroperitoneum due to injury of retroperitoneal structures. TP: retroperitoneal hematomas are found on CT or at the time of operation. Early in the course of a laparotomy, the surgeon should investigate this anatomic space. It is divided into three zones: zone 1 = great vessels and is flanked on the left and right by zone II which extends out to the kidneys. Zone III defines the pelvic

The Functional Role of the Urinary System

955 words - 4 pages The urinary system is made up of the following structures: • 2 kidneys, which secrete urine • 2 ureters, transports urine from the kidneys to the bladder • The urinary bladder: stores urine temporarily • The urethra: expels urine from the bladder to the exterior It is also the main excretory system in the body as it produces urine, ensuring that the body gets rid of unwanted and potentially harmful substances. Filtering blood plays a vital

Software Engineering

1735 words - 7 pages principles for user interface design * To explain different interaction styles and their use * To explain when to use graphical and textual information presentation * To explain the principal activities in the user interface design process (interaction activities) * To introduce usability attributes and approaches to system evaluation USER INTERFACE: * System users often judge a system by its interface rather than its

Lobes of Brain

1671 words - 7 pages – dorsal surface has 4 hillocks (bumps) superior (vision) & inferior (hearing) colliculi; superior cerebellar peduncle [R & S, pic. 92, 91] * Tectum (roof of midbrain) – superior & inferior colliculi with tectospinal tracts involved with blinking and head turning reflexes in response to sound or visual images * Basis (base of midbrain) – houses corticobulbar (fibers from sensorimotor cortex to somatic & efferent motor

Related Papers

Anatomy And Physiology Essay

746 words - 3 pages . It is often called the branch of anatomy. Since it cannot be seen with the naked eye, it deals with tissues, cells, or intracellular structures. In human anatomy, there are eleven body systems. These are the skeletal, muscular, cardiovascular, digestive, endocrine, nervous, respiratory, lymphatic, urinary, reproductive, and integumentary system. When studying the body systems, there are three different methods on how to study them which are

Bells Palsy Essay

710 words - 3 pages * 80% recover within weeks to months * If motor nerve conduction studies show evidence of denervation after 10 days indicates prolonged recovery of ~ 3 months & possible incomplete recovery HERNIATED NUCLEUS PULPOSUS ANATOMY The Vertebral Column Functions of the Vertebral Column 1) Anterior Portion * Provides for weight bearing, shock absorption and mobility in all directions 2) Posterior Portion * Provides for

Seven Approaches Essay

1172 words - 5 pages its structure and functions. Anatomy is the study of the structures of the body. Physiology is the study of the functions of those structures. This approach is often used when a health professional is in medical school learning the body or when doctors wants to study cells and how different diseases form. “Anatomy is the study of structures of the body and physiology is the study of the function of those structures. Each has a dramatic impact on

Audience Analysis

676 words - 3 pages so make sure to use bias-free language. The different members of the audience might appeal to different aspects of the presentation so make sure it appeals to everyone involved. A positive-emphasis presentation that avoids using negative words will also help get everyone involved in the presentation. Audiences will be both professional and non-professional. The non-professional audiences such as the customers are not going to know much about the