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Topic: Pharynx


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  Pharynx - Wikipedia, the free encyclopedia
Pharynx is the part of the neck and throat just behind the mouth and nose.
It is situated immediately posterior to the mouth and nasal cavity, and is cranial to the esophagus, larynx, and trachea.
Because both food and air pass through the pharynx, special adaptations are necessary to prevent choking or aspiration when food or liquid is swallowed.
en.wikipedia.org /wiki/Pharynx   (231 words)

  
 XI. Splanchnology. 2c. The Pharynx. Gray, Henry. 1918. Anatomy of the Human Body.
It is a musculomembranous tube, somewhat conical in form, with the base upward, and the apex downward, extending from the under surface of the skull to the level of the cricoid cartilage in front, and that of the sixth cervical vertebra behind.
As soon as the bolus of food is received in the pharynx, the elevator muscles relax, the pharynx descends, and the Constrictores contract upon the bolus, and convey it downward into the esophagus.
In the nasal part of the pharynx it is covered by columnar ciliated epithelium; in the oral and laryngeal portions the epithelium is stratified squamous.
www.bartleby.com /107/244.html   (1400 words)

  
 PHARYNX - LoveToKnow Article on PHARYNX   (Site not responding. Last check: 2007-11-07)
The oral pharynx communicates with the naso-pharynx by the pharyngeal isthmus behind the free edge of the soft palate.
Above and in front it is continuous with the cavity of the mouth, and the demarcation between the two is a ridge of mucous membrane on each side running from the soft palate to the side of the tongue, and caused by the projection of the palato-glossus muscle.
Below this the pharynx narrows rapidly until the level of the lower border of the cricoid cartitape in front and of the sixth cervical vertebra behind is reached; here it passes into the oesophagus, having reached a total length of about five inches.
50.1911encyclopedia.org /P/PH/PHARYNX.htm   (1572 words)

  
 Respiratory System / Conducting Passages / Pharynx
The pharynx, commonly called the throat, is a passageway that extends from the base of the skull to the level of the sixth cervical vertebra.
The nasopharynx is the portion of the pharynx that is posterior to the nasal cavity and extends inferiorly to the uvula.
The oropharynx is the portion of the pharynx that is posterior to the oral cavity.
training.seer.cancer.gov /module_anatomy/unit9_4_resp_passages2_pharynx.html   (175 words)

  
 Chapter 53: THE PHARYNX AND LARYNX   (Site not responding. Last check: 2007-11-07)
The constrictors of the pharynx have their fixed points in the anterior larynx, where they are attached to bones or cartilages, whereas they expand posteriorly, overlap one another from inferior to superior, and end in a median tendinous raphe in the posterior midline.
The pharyngeal ridge is an elevation or bar on the posterior wall of the pharynx inferior to the level of the soft palate; it is produced during swallowing by transverse muscle fibers.
The epiglottis is attached by ligaments to the hyoid bone, to the posterior aspect of the tongue, to the sides of the pharynx, and to the thyroid cartilage.
www.dartmouth.edu /~humananatomy/part_8/chapter_53.html   (5054 words)

  
 Dorlands Medical Dictionary
(fə-ring”go-lə-ring´je-əl) pertaining to the pharynx and the larynx.
(fə-ring”go-stə-no´sis) [pharyngo- + stenosis] narrowing of the lumen of the pharynx.
(far”ing-got´ə-me) [pharyngo- + -tomy] surgical incision of the pharynx.
www.mercksource.com /pp/us/cns/cns_hl_dorlands.jspzQzpgzEzzSzppdocszSzuszSzcommonzSzdorlandszSzdorlandzSzdmd_p_16zPzhtm   (3398 words)

  
 [No title]
The PHARYNX is a fibromuscular tube which extends from the base of the skull to the lower border of the cricoid cartilage (at which point it becomes the esophagus).
Portions of the pharynx lie posterior to the nasal cavity (nasal pharynx), oral cavity (oral pharynx) and larynx (laryngeal pharynx).
First, the larynx is raised, along with the pharynx, by the contraction of the longitudinal muscles of the pharynx.
www.emory.edu /ANATOMY/AnatomyManual/pharynx.html   (2077 words)

  
 pharynx - Hutchinson encyclopedia article about pharynx
Its walls are made of muscle strengthened with a fibrous layer and lined with mucous membrane.
The internal nostrils lead backwards into the pharynx, which continues downwards into the oesophagus and (through the epiglottis) into the windpipe.
On each side, a Eustachian tube enters the pharynx from the middle ear cavity.
encyclopedia.farlex.com /pharynx   (133 words)

  
 pharynx - The Columbia Encyclopedia, Sixth Edition - HighBeam Research   (Site not responding. Last check: 2007-11-07)
PHARYNX [pharynx], area of the gastrointestinal and respiratory tracts which lies between the mouth and the esophagus.
At its upper end, it is continuous with the mouth and nasal passages, and connects with the ears via the Eustachian tubes.
In humans, the pharynx is particularly important as an instrument of speech: it functions with the various parts of the mouth to articulate the initial sounds produced in the larynx.
www.highbeam.com /doc/1E1:pharynx/pharynx.html?refid=ip_hf   (179 words)

  
 Pharynx   (Site not responding. Last check: 2007-11-07)
Fig 13.1 Frontal section of the head and pharynx of an embryonic gnathostome vertebrate (Hildebrand, 1988).
*derived from the ventral midline of the pharynx
*larynx is a chamber at the junction of the trachea and pharynx
www.lander.edu /rsfox/308pharynxLec.html   (1268 words)

  
 The Pharynx of Caenorhabditis elegans - results
The pharynx is located at the anterior of the animal and opens to the outside by the buccal cavity (B).
The pharynx terminates in the pharyngeal-intestinal valve or cardia, which is seen in figure 1, plate 1, as a collar linking pharynx and intestine.
The position of the nuclei are aligned with a drawing of the pharynx to suggest the relative positions of the nuclei in the pharynx.
www.wormatlas.org /albertson_1975/results.html   (7523 words)

  
 The Pharynx of Caenorhabditis elegans - discussion
The nematode pharynx has been used widely as the basis for the taxonomy of these animals, because nuclei, organized in well-defined and constant arrays were easily visualized by light microscopists.
Somatic sensory input to the pharynx is primarily through a set of anterior sensilla, the inner labials.
To act as a rescue mechanism, the proprioreceptive endings of I1 would have to detect the open state of the pharynx and by means of the connection to M2 stimulate the isthmus to contract and pass food back to the terminal bulb.
www.wormatlas.org /albertson_1975/discussion.html   (2325 words)

  
 The Pharynx   (Site not responding. Last check: 2007-11-07)
The walls of the pharynx contain muscles that play a major role in swallowing, gagging, and vomiting, and also are important for phonation, respiration, coughing, and sneezing.
The muscles of the pharynx are the superior (SPC), middle (MPC), and inferior (IPC) pharyngeal constrictors and the paired stylopharyngeus, salpingopharyngeus, and palatopharyngeus muscles.
The motor nerves to the pharynx combine to form the pharyngeal plexus which in turn supplies the terminal motor branches to pharyngeal structures.
www.upperairway.com /pharynx.htm   (491 words)

  
 Core Curriculum Syllabus: Inflammatory Disorders of the Pharynx
The pharynx is a dynamic conduit for inspired air and ingested matter, responsible for diverting each into the trachea or esophagus, respectively.
Penetrating injuries of the pharynx and mouth may result from assault, or from falling with sharp objects in the mouth (especially pencil injuries in children).
Examination reveals excessive secretions with erythema of the pharynx; the epiglottis is edematous and often "cherry" red.
www.bcm.edu /oto/studs/pharynx.html   (2398 words)

  
 Pharynx - Search Results - MSN Encarta
Pharynx, muscular tube located in the neck, lined with mucous membrane, that connects the nose and mouth with the trachea (windpipe) and esophagus...
Air leaves the nasal passages and flows to the pharynx, a short, funnel-shaped tube about 13 cm (5 in) long that transports air to the larynx.
throat, trachea, air sac, airway, alveolus, bronchial tube, bronchiole, bronchus, larynx, lung, pharynx, vocal cords, voice box, windpipe, nose,...
ca.encarta.msn.com /Pharynx.html   (116 words)

  
 Particle Retention and Flow in the Pharynx of the Enteropneust Worm Harrimania planktophilus: The Filter-Feeding ...
Once in the digestive pharynx, particles are transported posterior to the esophagus organ and intestine (not shown).
and the anterior region of the pharynx of Balanoglosus gigas.
endostyle-like organ in the dorsal pharynx of the enteropneust
www.biolbull.org /cgi/content/full/202/2/192   (3684 words)

  
 The Mouth and Pharynx of the Scorpion (1860)
In describing the alimentary canal, he merely says:–"The pharynx which arises in front of the brain, upon a particular, strongly excavated, portion of the skeleton, is much wider than the rest of the intestine, and resembles a vesicle.
The oesophagus, which commences in a slightly funnel-shaped pharynx, is [397] delicate, short, and widened posteriorly, so as to resemble what M. Léon Dufour calls the 'jabot' in insects.
Viewed from above or below, however, the pharynx appears to be very narrow, indeed, almost linear, in consequence of its very peculiar form, which is displayed in the section, taken transversely to the longitudinal axis and perpendicularly to the vertical plane represented in fig.
aleph0.clarku.edu /huxley/SM2/Scorp.html   (1659 words)

  
 Lab Manual - Carotid Sheath, Pharynx, & Larynx
Describe the pharynx, its anatomical architecture and action of its musculature during swallowing.
Twist the head on the vertebral column, insert a chisel between atlas and occipital condyle and pry the skull forward; sever ligaments and muscles at the base of the skull as necessary until the vertebral column and scalene muscles is removed.
Nasopharynx: Identify the choanae, soft palate and uvula, torus tubarius, pharyngeal recess, and the pharyngeal tonsil.
anatomy.med.umich.edu /nervous_system/deepneck.html   (1292 words)

  
 CCA-1, EGL-19 and EXP-2 currents shape action potentials in the Caenorhabditis elegans pharynx -- Shtonda and Avery 208 ...
In Caenorhabditis elegans the pharynx is the feeding organ.
To dissect the pharynx, the head is cut off between the pharynx and the intestine.
Recordings in C and D are from wild-type pharynxes, and the pulse protocol is the same as in A. Numbers next to current traces indicate peak depolarization of the voltage pulse.
jeb.biologists.org /cgi/content/full/208/11/2177   (7224 words)

  
 Digestive System / Regions of the Digestive System / Pharynx & Esophagus
The pharynx is a fibromuscular passageway that connects the nasal and oral cavities to the larynx and esophagus.
Food is forced into the pharynx by the tongue.
The esophagus is a collapsible muscular tube that serves as a passageway between the pharynx and stomach.
training.seer.cancer.gov /module_anatomy/unit10_3_dige_region2_pharynx.html   (318 words)

  
 Pharynx-Overview of Comparative Digestive Physiology-BMS 511   (Site not responding. Last check: 2007-11-07)
The pharynx connects the oral cavity and the esophagus.
During deglutition (swallowing), when the bolus of food is plunged into the pharynx by the tongue, the pharynx shortens and its muscle contractions force food into the esophagus.
Note that other parts of the muscles of the gut are smooth involuntary muscles controlled by the autonomic nervous system and the myenteric plexuses part of the gut nervous system, situated between the circular and longitudinal muscle layers.
www.vet.purdue.edu /vtdl/tmp/course_work/digestive/nutshell/list_items/phrynx.htm   (212 words)

  
 Pharynx Simulation   (Site not responding. Last check: 2007-11-07)
In these pictures the size of the lumen relative to the pharynx is exaggerated.
It is impossible for the pharynx to achieve net motion of the bacteria if the relaxation is the reverse of the contraction.
I believe I understand why this is. If you think about the pharynx when the corpus is closing, liquid is flowing posteriorly in the isthmus, but anteriorly in the corpus.
eatworms.swmed.edu /~leon/pharynx_sim   (1967 words)

  
 The Pharynx and Larynx   (Site not responding. Last check: 2007-11-07)
Pharyngo-basilar fascia - fills gaps in walls of pharynx and is attached to base of skull 4.
Buccopharyngeal fascia - lines the outside of the pharynx forming the anterior boundary of the retropharyngeal space.
is sensory to all pharynx between the opening of the auditory tube and the larynx.
www.meddean.luc.edu /lumen/meded/grossanatomy/course_stuff/syllabus/23_pharynx.html   (374 words)

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