Triangles Of Neck Flashcards
Cutaneous Nerves of Neck
Posterior
Cutaneous Branches of Dorsal Rami of
C2 (Greater occipital n)
C3-C6
Cutaneous Nerves of Neck
Anterolateral
Cutaneous branches of cervical plexus from ventral rami C2-C4
Less occipital
Great auricular
Transverse cervical
Supraclavicular
Dermatomes of neck
Anterior C2-C4
Posterior C3-C5
No C1 dermatome
Vertebral compartment
Cervical vertebrae
Surrounding mm
Visceral compartment
Parts of resp and GIT
Some endocrine organs
Vascular compartments
Major blood vessels
CN X
Deep fascia of neck
Investing (superficial) layer
Visceral (pretracheal and buccopharyngeal) layer
Prevertebral layer
Carotid sheath
Retropharyngeal space location
Between visceral and prevertebral layers
Bordered laterally by carotid sheath
Torticollis
“Wry neck”
Fibrotic or spastic shortening of SCM
CN XI location
LMNs in ventral horn of upper cervical SC
Ant to ant scalene
Phrenic n
Subclavian n
IJV
Between ant and middle scalene
Subclavian a
Brachial plexus
Lower part of cervical plexus
Superficial infrahyoid (strap) mm and innervation
Sternohyoid
Omohyoid
Ansa cervicalis from C1-C3 of cervical plexus
Deeper infrahyoid (strap) mm and innervation
Sternothyroid
(Ansa cervicalis from C1-C3 of cervical plexus)
Thyrohyoid
(C1 fibres that run with CN XII)
Suprahyoid mm and innervation
Anterior belly digastric and mylohyoid (CN V3)
Posterior belly digastric and stylohyoid (CN VII)
Geniohyoid (C1 runs with CN XII)
Submandibular triangle
Digastric bellies
Mandible
Submental triangle
Ant belly digastric
Hyoid
Midline
Carotid triangle
SCM
Sup belly omohyoid
Post belly digastric
Muscular triangle
Sup belly omohyoid
SCM
Midline
Stylohyoid
Suprahyoid m
CN VII
Styloglossus
Extrinsic tongue m
CN XII
Stylopharyngeus
Pharyngeal m
CN IX
Anterior vertebral mm and innervation
Longus capitus
Longus colli
Rectus capitis anterior (and latetalis)
Ant scalene (and middle and post)
Ventral rami of cervical nn
