7-Temporal Region and Pharynx brainscape Flashcards

1
Q

Articular disc of the TMJ

A

divides the joint cavity into upper and lower sections allowing for both hinge joint movement and gliding

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2
Q

Borders of the Infratemporal Fossa

A

Laterally: ramus of mandible Medial: Lateral pterygoid plate Anteriorly: Posterior aspect of maxilla Posteriorly: Tympanic plate, mastoid & styloid process of temporal bone Superiorly: Inferior surface of greater wing of sphenoid Inferiorly: where pterygoid muscle attaches to the mandible near its angle

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3
Q

Branches of the third part of the maxillary artery

A

1) Middle meningeal 2) Infraorbital 3) Superior & inferior dental arteries

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4
Q

Contents of the Infratemporal Region

A

Muscles: lateral & medial pterygoid, part of temporalis Vessels: Maxillary artery, pterygoid venous plexus Nerves: mandibular (V3), inferior alveolar (V3), lingual (V3), Buccal (V3), chorda tympani (CN VII), otic ganglion

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5
Q

Contents of the Pterygopalatine Fossa

A

*Maxillary artery & beginning of branches *Maxillary nerve associated with the nerve of the pterygoid canal and the pterygopalatine ganglion

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6
Q

Divisions of the Pharynx

A

Nasopharynx: From choncae of nasal cavities to soft palate Oropharynx: From soft palate to upper marginof epiglottis Laryngopharynx: From superior margin of epiglottis to top of Esophagus at CVI

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7
Q

From what does the middle meningeal artery arise?

A

Maxillary artery, which is a branch off the external carotid

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8
Q

Innervation of the Laryngopharynx

A

Motor: Pharyngeal plexus Sensory: CN X via internal laryngeal

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9
Q

Innervation of the Nasopharynx (Motor & Sensory)

A

Motor: all muscles from pharyngeal plexus, IX, X, and XI except for tensor palatine (V3) Sensory: CN V2 (maxillary), Greater palatine & nasopalatine

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10
Q

Innervation to Oropharynx

A

Motor: Pharyngeal plexus (mostly vagus) except for the stylopharyngeus (IX) Sensory: CN IX

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11
Q

Isthmus of Fauces

A

constricted space between oral cavity proper and oropharynx - guarded by palatoglossal and palatopharyngeal folds

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12
Q

Laryngopharynx

A

Laryngeal inlet guarded by the epiglottis, with piriform recesses located laterally (depressions)

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13
Q

Level of vertebrae at cricoid cartilage

A

C6 –> esophagus begins here

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14
Q

Ligaments of the TMJ

A

Sphenomandibular & stylomandibular- support the joint but are a distance from the joint itself

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15
Q

Lymph tissue of the nasopharynx and clinical correlate

A

Pharyngeal tonsil: enlarged = adenoids

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16
Q

Motor Innervation of the Pharynx

A

Pharyngeal Plexus: (IX & X) most muscles except stylopharyngeus (IX only) and tensor veli palatini (V3) Glossopharyngeal: Stylopharyngeus Mandibular: Tensor veli palatini External Laryngeal: May innervate the inferior pharyngeal constrictor muscles

17
Q

Muscles for closing the mouth

A

Temporalis Sling of masseter & medial pterygoid muscles

18
Q

Muscles involved in opening the mouth

A

Lateral Pterygoid Mylohyoid Digastric muscles

19
Q

Muscles of the Laryngopharynx

A

Inferior constrictor

20
Q

Muscles of the Nasopharynx

A

*Salpingopharyngeus *Palatopharyngeus *Palateglossus *Muscular uvulae *Levator palatine *Tensor palatine *Superior constrictors

21
Q

Muscles of the Oropharynx

A

*Palatoglossal & Palatopharyngeal folds *Stylopharyngeus *Middle constrictors

22
Q

Muscles of the soft palate & Innervation

A

*Levator veli palatini - X *Tensor veli palatini - V3 (both tensor muscles) *Palatopharyngeus - X *Palatoglossus - X *Muscular uvulae All palate muscles X except for Tensor Veli Palatini = V3

23
Q

Opening of the Eustachian tube into the nasopharynx

A

overhung by mucous membrane folds (salpingopharyngeal fold) and tubal elevations (muscles)- connection of nasopharynx to the middle ear, equalizes pressure

24
Q

Origins of the pharynx constrictor muscles

A

Superior: Mandible/sphenoid Middle: Hyoid Inferior: Thyroid/crichoid cartilage

25
Q

Palatine Tonsils

A

located between the palatoglossal and palatopharyngeal folds. Consists of lymph tissue, usually larger in children

26
Q

Protraction movement of jaw - muscles?

A

Masseter Pterygoids

27
Q

Retraction movement of jaw muscles

A

Temporalis Masseter

28
Q

Roots & Branches of the Mandibular Nerve (V3)

A

*After foramen ovale gives off two branches, 1) branch to nervus spinosus (sensory) and 2) nerve to medial pterygoid muscle (motor) *Then two trunks Anterior: masseteric nerve, deep temporal nerve, buccal nerve, lateral pterygoid nerve Posterior: Auriculotemporal, lingual, inferior alveolar, and motor branch to mylohyoid and anterior belly of digastric muscles

29
Q

Sensory Branches of V3

A

BAIL Buccal (long buccal nerve, other buccal nerve is motor branchf off of VII) Auriculotemporal Inferior alveolar Lingual

30
Q

Sensory Innervation of the Pharynx

A

Nasopharynx: Maxillary (V2) Oropharynx: Glossopharyngeal (IX) Laryngopharynx: Internal Laryngeal (X)

31
Q

Side to Side movement of the jaw - muscles?

A

Temporalis Masseter Pterygoid of contralateral side

32
Q

Temporomandibular joint

A

modified hinge joint betwee the mandibular fossa and the condyloid process

33
Q

Vessels & Lymph to Palatine Tonsils

A

Arterial: facial, maxilary, ascending pharyngeal, lingual arteries Venous: into IJV/facial maybe Lymph: Upper Deep Cervical Nodes

34
Q

What is the course of the chorda tympani

A

*Branches from CN VII intracranially *Passes by middle ear, joints lingual nerve in the infratemporal fossa (branch of V3)

35
Q

Where does the nasopharynx end?

A

at the level of the soft palate (the uvula)

36
Q

Which nerves are located close to the TMJ?

A

1) Auriculotemporal nerve 2) Otic ganglion

37
Q

Which pterygoid is better for larger chewing movmenets? smaller grinding movements?

A

Larger = Lateral Smaller = Medial