Muscles and osteofascial compartments of the neck, innervation. Vascular and nervous stems in the neck

MUDr. Veronika Němcová CSc.

SCM

TROH

Mm.scaleniLS

SC

SH

TH

ST

Dig

StyloH

Hyoglossus

Muscles of the neck

Neck muscles -innervation• MUSCLES • from the 1-st branchial arch V/3 – m.mylohyoideus,

m.digastricus v.a.• from the 2-nd branchial arch VII – m.stylohyoideus,

m.digastricus, m. platysma• in the superficial fascia XI - m.sternocleidomastoideus,

m.trapezius• infrahyoid ansa cervicalis profunda (C1-C3) –

m.sternohyoideus, m.sternothyroideus, m.thyrohyoideus, m.omohyoideus

• deep cervical muscles anterior branches of cervical nerves– m.scaleni, m.longus colli, m.longus capitis, m.rectus capitis ant.+lat.

Neck muscles layers

• 1-m.platysma• 2-m.sternocleidomastoideus,

m.trapezius• 3-mm.suprahyoidei +

mm.infrahyoidei• 4-mm.scaleni, m.longus capitis,

m.longus colli, m.rectus capitis ant., m.obliquus capitis ant.

F

F.colli superficialis

F.colli media(pretrachealis)

F.colli profunda(prevertebralis)

Neck fascias

Spatium retroviscerale

Spatium suprasternale

Spatium pretracheale

Vagina carotica

Spatium paraviscerale

Suprahyoid and infrahyoid muscles

Suprahyoid and infrahyoid muscles

Mylohyoid and geniohyoid

Styloid septum muscles

posterior belly of digastricus

stylohyoid

styloglossusstylopharyngeus

prestyloid space – external carotid arteryretrostyloid space – internal carotid artery

SPh

SG

S-H

DiSCM

Styloid septum muscles

crossection

Submandibular triangle

mandible

Digastricus - posterior belly

SH

hyoid boneDigastricus - anterior belly

mylohyoid

hyoglossus

Submandibular triangle

M.mylohyoideus

Gl.submandibularisA.facialis

V.facialis

A.submentalis

r.mylohyoideus

Submandibular trianglesuperficial layer

TS

LF

CI CE

JI

Lingual nerve and submandibular ganglion

Submandibular duct

Arcus n.XII

Submandibular triangledeep layer

Lingual artery in the Beclard´s angle

Trigonum Pirogovi

Beclard´s angle and trig.Pirogov´s trigon

A.lingualis

Trigonum submandibularesuperficial layer

Nodi lymfatici cervicales profundi

Trigonum submandibularedeep layerrepetition

Regio colli anterior - muscles

Platysma

Internal jugular vein and omohyoid

Regio colli anteriorsuperficial and pretracheal fascia removed

Infrahyoid muscles

Infrahyoid and deep neck muscles

Deep neck muscles

Scalene muscles

Neck-deep layer

Anterior neck region

Anterior neck region – infrahyoids removed

Anterior neck region – infrahyoids removed

Arcus venosus juguli

v.thyroidea inferior

Ansa cervicalis

Head and neck regions

Trig. caroticum

Trig.submandibulare

Trig.submentale

Trigonum omoclaviculare

Trig.omotrapeziumP A

Head and neck region carotid triangle

SCM

OH

DGvp

Trigonum caroticumborders

Trigonum caroticumcontent

C3-4 common carotid

External carotid artery branches:3 anterior2 -3 posterior1 medial2 terminal

internal external

Trigonum caroticumcontent

C3-4

A.facialis

A.lingualis (Beclard´s angle)

A.thyroidea sup.

N.XII (arcus n.hypoglossi

N.laryngeus sup(z n.vagus)

V.jugularis interna

Radix superior ansae cervicalis

A.occipitalis

A.auricularis post

External carotid artery branches:3 anterior2 -3 posterior1 medial2 terminal

TS

LF

IJ IC

SPh

Dig

R.SCM

Tongue muscles

Infrahyoids

Vascular and nervous bundle of the neck

Schema of the neck muscles and vesselsarrangement

Platysma

Punctum nervosum(Cervical plexus – general sensory branches)

Lateral neck region

V.jugularis externa

Nn.supraclaviculares

N.transversus colli

N.auricularis magnus

N.occipitalis minor

Sternocleidomastoid region –fascia colli superficialis removed

Plexus brachialis

Omoclavicular and omotrapezoid triangle

in the scalene fissure !

Krk zboku hluboká vrstvaLateral neck regiondeep layer

Truncus sympaticus(f.colli profunda)

N.vagus(vagina carotica)

N.frenicus(m.scalenus ant.)

3 vertically running nerves !!!

A.vertebralis

Tr.thyreocervicalis

A.subclavia

A.transversa colli

Plexus brachialis

Superior thoracis aperture

vv. brachicephalicae

VCS

Plexus brachialis

a. subclavia

v. subclavia

N.frenicus

n.vagus

Tr.sympaticus

Ductus thoracicus

Superior thoracis aperturerepetition

Superior mediastinumcrossection

Neck crossection repetition

Sources• Petrovický et al., Anatomie I• Grim, Základy anatomie• Čihák, Anatomie I• Sobotta, Atlas anatomie člověka• Bertolini/Leutert, Atlas der Anatomie des

Menschen• Netter, Atlas • Grayś Anatomy