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MASTICATORY MUSCLES. n. V3 – n. MANDIBULARIS derivates of 1st pharyngeal arch m. temporalis m. masseter m. pterygoideus medialis m. pterygoideus lateralis. Lower jaw movements. elevation ( elevatio ) depression ( depressio ) protraction / propulsion ( protractio / propulsio )
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MASTICATORY MUSCLES • n. V3 – n. MANDIBULARIS • derivates of 1st pharyngeal arch • m. temporalis • m. masseter • m. pterygoideus medialis • m. pterygoideus lateralis
Lower jaw movements • elevation (elevatio) • depression (depressio) • protraction / propulsion (protractio / propulsio) • retraction / retropulsion (retractio / retropulsio) • lateropulsion (lateropulsio)
m. temporalis m. masseter
m. pterygoideus lateralis m. pterygoideus medialis
m. pterygoideus lateralis m. pterygoideus medialis
Mandibularsling • fibrous sling below angulus mandibulae • connection of m. masseter and m. pterygoideus medialis
FACIAL MUSCLES • n. VII – n. FACIALIS • derivates of 2nd pharyngeal arch • muscles around the eye • muscles around the nose • muscles around the mouth • muscles of the cranial vault • muscles of the auricle • m. buccinator
Musclesaroundtheeye • m. orbicularisoculi • parspalpebralis • parsprofunda(formerparslacrimalis) • parsorbitalis • m. procerus • m. corrugatorsupercilii • m. depressorsupercilii • Muslcesaroundthe nose • m. nasalis • parsalaris • parstransversa • m. depressorseptinasi
Musclesaroundthemouth • modiolusangulioris • m. orbicularisoris • parsmarginalis • parslabialis • m. levator labii superioris • m. levator l.s. alaequenasi • m. depressor labii inferioris • m. levatorangulioris • m.depressor angulioris • m. zygomaticus major • m. zygomaticusminor • m. risorius • m. mentalis • m transversusmenti
Modiolusangulioris fibro-muscular node connecting the insertions of facial muscles serve as the „hub“ and forms a dimple on the cheek
tough aponeurosis covering the vertex of skull GaleaaponeuroticaEpicranialsponeurosis
Muslcesofthecranialvault • = m. epicranius • m. occipitofrontalis • venterfrontalis • venteroccipitalis • m. temporoparietalis • Galeaaponeurotica = Aponeurosisepicranialis • Musclesoftheauricle • m. auricularisanterior • m. auricularis superior • m. auricularisposterior • rudimentarymuscleofauricle (7)
Musculus buccinator • ductusparotideusStenoni • corpus adiposumbuccaeBichati • lateralwallof oral cavity • testingmovementsofn. facialis
Fasciaeofhead • fascia temporalis • fascia parotidea • fascia masseterica • fascia buccopharyngea • lamina interpterygoidea corpus adiposum buccaeBichati
Superficialmusculo-aponeuroticsystem(SMAS) continuousfibro-musuclarlayerconnectingthefacialmusclesandfillingspacesbetweenandaroundthem
Motor somitecranialnerves • preoticmyotomes(somitomeres) formtheexternalmusclesofeyeball– n. III, IV, VI • occipitalsomitesfromthemusclesoftongue– n. XII
Externalmusclesofeyeball • mm. recti • superior, inferior, medialis, lateralis • mm. obliqui • inferior, superior • m. levator palpebrae superioris • inervace: n. III, n. IV, n. VI • smooth muscles: m. orbitalis Mülleri, m. tarsalis sup. Mülleri + inf.
Anulus tendineus communis Zinni inside: • n. III • n. VI • n. nasociliaris • n. II + AO outside: • n. IV • n. frontalis • n. lacrimalis • v. ophthalmica superior
Os hyoideum corpus cornua majora cornua minora
Musclesofneck • platysma – n. VII • m. sternocleidomastoideus – n. XI + C2-4 • mm. infrahyoidei – ansa cervicalis profunda • mm. suprahyoidei – V3, VII., C1 • mm. scaleni – nn. spinales (C1-C8) • deep muscles of neck – nn. spinales (C1-C6)
Platysma • superficial (skin) muscle • external to lamina spf. fasciae cervicalis • absent in the midline • insertion: pars labilais, modiolaris et mandibularis • n. VII (r. colli) • function: skin tension
Krční řasa – Pterygium colli Turners‘ sy
M. sternocleidomastoideus • origin: 2 parts • pars sternali et clavicularis • fossa supraclavicularis minor(projection of cupula pleurae) • úpon:processus mastoideus + linea nuchalis superior • n.XI + fibers from C2-4 • movements in articulatio atlantooccipitalis
M. sternocleidomastoideus • function • bilateral: • posterior part – retroflexion • anterior part – anteflexion • unilateral: • lateroflexion to the same side • rotation to the opposite side
Musculiinfrahyoidei • m. sternohyoideus • m. sternothyroideus • m. thyrohyoideus – C1 • m. omohyoideus • venter superior + inferior • innervation: ansa cervicalis profunda C1-C3 • function: stabilization of larynx
Musculisuprahyoidei derivates of 2nd pharyngeal arch – n. VII • m. stylohyoideus • m. digatricus – venter posterior derivates of 1st pharyngeal arch – n. V3 • m. mylohyoideus • m. digatricus – venter anterior derivates of cervical somites: • m. geniohyoideus – C1 • function: stabilization of larynx (phonation)