The Pharynx (Anatomy of the Neck)
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Transcript of The Pharynx (Anatomy of the Neck)
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PHARYNX(Page 117)
Dr.Sherif Fahmy
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Shape & ExtensionsShape: Funnle-shaped.Extensions:
- Above: base of skull.- Below: Esophagus at level of C6
vertebra.Length: 5 inchesDiameter: 3.5 cm at upper end & 1.5 cm at lower end. Dr.Sherif Fahmy
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Parts of Pharynx•1- Naso-pharynx•2- Oro-pharynx•3- Laryngo-pharynx
Dr.Sherif Fahmy
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Naso-pharynx
oro-pharynx
Laryng-pharynx
Soft palate
Epiglottis
Larynx
Sagittal Section
Dr.Sherif Fahmy
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Relations of pharynxDr.Sherif Fahmy
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Larynx
Nasal cavity
Oral cavity
Dorsum of tongue Upper 6 cervical vertebrae
Anterior & Posterior Relations
Dr.Sherif Fahmy
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Lobe of thyroid glandCommon carotid
art.
Styloid apparatus
Lateral Relations
Dr.Sherif Fahmy
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Layers of Wall of pharynx1- Mucosa.2- Submucosa.3- Pharyngo-basilar fascia.4- Muscle layer.5- Buccopharyngeal fascia.
Dr.Sherif Fahmy
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Muscles of PharynxA- Constrictor musclesB- Longitudinal muscles
Dr.Sherif Fahmy
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Constrictor Muscles(Page 119)
Dr.Sherif Fahmy
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Crico-pharyngeus m
Thyro-pharyngeus m3- Inferior
Constrictor m
Cricoid
Thyroid
Hyoid
Stylohyoid lig.
2- Middle constrictor m
Pterygoid hamulus
Pterygo-mandibular lig.
1- Superior constrictor m
Pharyngeal tubercle
Pharyngeal raphe
Dr.Sherif Fahmy
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Gaps Between Constrictor Muscles
Dr.Sherif Fahmy
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Cricoid
Thyroid
Hyoid
Tensor palati m.Auditory tube
Tensor palati m.
Stylopharyngeus m.
Glossopharyngeal nerve
Superior laryngeal art.Internal laryngeal nerve
Thyro-hyoid membrane
Dr.Sherif Fahmy
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Dr.Sherif Fahmy
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Longitudinal Muscles of Pharynx
• 1- Stylo-pharyngeus muscle• 2- Palato-pharyngeus muscle• 3- Slapingo-phryngeus muscle
Dr.Sherif Fahmy
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Auditory tube
Salpingo-pharyngeus m.
Soft palate
Palato-pharyngeus m
Stylo-pharyngeus m
Thyroid cartilage
Wall of pharynx
Styloid process
Dr.Sherif Fahmy
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Cavity of Pharynx
Dr.Sherif Fahmy
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Naso-pharynx
oro-pharynx
Laryng-pharynx
Soft palate
Epiglottis
Larynx
Sagittal Section
Dr.Sherif Fahmy
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A- Naso-pharynx1- Boundaries.2- Communications.3- Internal features.
Dr.Sherif Fahmy
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Naso-pharyngeal tonsil
Opening of auditory tube
Tubal elevation
Salpingo-pharyngeal foldPharyngeal recess
Dr.Sherif Fahmy
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B- Oro-pharynx1- Boundaries.2- Communications.3- Internal features.
Dr.Sherif Fahmy
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Palatine tonsil
Dr.Sherif Fahmy
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Palatine tonsils
Palato-glossal fold
Palato-pharyngeus fold
Dr.Sherif Fahmy
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Uvula (median part of soft palate)
Palato-glossal fold
Palato-pharyngeal fold
Palatine tonsil
Dr.Sherif Fahmy
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Palatine Tonsil(Page 124)
Dr.Sherif Fahmy
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Palatine tonsil
Dr.Sherif Fahmy
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Relations of Palatine Tonsil
Dr.Sherif Fahmy
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Palatine tonsil
Dr.Sherif Fahmy
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Palato-glossal fold
Palato-pharyngeal fold
Palatine tonsil
Dr.Sherif Fahmy
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Intra-tonsillar cleft
Tonsillar crypts
capsule Superior constrictor m.
Paratonsillar vein
Facial art.
Ascending palatine art.
I.C.A.
Medial
Dr.Sherif Fahmy
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Arterial supply of palatine tonsil:1- Tonsillar branch of facial artery.2- Ascending pharyngeal artery.3- Ascending palatine artery.4- Lesser palatine artery.5- Dorsal lingual arteries from lingual artery.
Nerve supply:1- Glossopharyngeal nerve.2- Lesser palatine nerve.Lymph drainage:1- Jugulo-digastric nodes.Surface anatomy:- Oval area on ramus of mandible, above and infront angle of mandible. Dr.Sherif Fahmy
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C- Laryngo-pharynx1- Boundaries.2- Communications.3- Internal features.
Dr.Sherif Fahmy
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Posterior view
Posterior wall of pharynx (Cut)
Piriform recess
Inlet of larynx
Pathway of food during swallowing
Dr.Sherif Fahmy
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Waldeyer’s Ring of Lymphoid Tissue
• 1- Nasopharyngeal tonsil• 2- Palatine tonsils• 3- Lingual tonsil• 4- Tubal tonsils
Dr.Sherif Fahmy
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Palatine tonsil
Naso-pharyngeal tonsil
Tubal tonsil
Lingual tonsil
Dr.Sherif Fahmy
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Arterial Supply of Pharynx• 1- Ascending pharyngeal artery.• 2- Ascending palatine artery.• 3- Pharyngeal branch from maxillary artery.
• Pharyngeal plexus:• 1- Pharyngeal branch of glosso-pharyngeal nerve (sensory).• 2- Pharyngeal branch of vagus (Motor).• 3- Pharyngeal branch from superior cervical sympathetic
ganglion (sympathetic)
Dr.Sherif Fahmy
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Dr.Sherif Fahmy
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Dr.Sherif Fahmy