Superficial & Deep Sphincter Muscles of the Neck PDF

Superficial and Deep Sphincter Muscles of the Neck  Name Origin Insertion Function Innervation Ventral Superficial sphincter borders of muscle...

Superficial and Deep Sphincter Muscles of the Neck  Name Origin Insertion Function Innervation Ventral Superficial sphincter borders of muscle of the neck (m. Continuation from Tenses skin in the Cervical branch of the facial platysma at sphincter colli the head laryngeal region nerve head-neck superficialis) junction Radiates into the Tenses and moves Cervical branch of the facial Platysma muscle facial cutaneous N/A skin on dorsal and nerve muscle lateral neck Deep sphincter muscle Present in Median raphe, Tenses superficial of the neck (m. Cervical branch of the facial carnivores and sternal fascia in the sphincter colli nerve equines manubrium laryngeal region profundus) Cutaneous muscle of Manubrium of the Ventral aspect Moves skin of the Cervical branch of the facial the neck (m. cutaneus sternum of the neck neck nerve colli) Erector Spinae Muscles  Name Origin Insertion Function Innervation Dorsal branches of thoracic and lumbar Iliocostalis Sacrum, iliac crest, ribs Ribs, cervical transverse processes Extends and laterally flexes the spine nerves Fixes thoracic vertebral column and Dorsal branches of cervical and thoracic Spinalis cervicis Tendon of semispinalis thoracis Spinous processes of cervical vertebrae raises the neck nerves Fixes vertebral column and raises the Dorsal branches of cervical and thoracic Spinalis thoracis Fascia of longissimus Spinous processes of thoracic vertebrae neck nerves Longissimus capitis Transverse processes of T1-T3, C5-C7 Mastoid process of temporal bone Extends and rotates the head Dorsal branches of cervical nerves Extends neck; raises neck obliquely and Longissimus cervicis Transverse processes of T1-T5 Transverse processes of C2-C6 Dorsal branches of cervical nerves turns it to one side Iliac crest, sacrum, spinous processes of Transverse processes of thoracic Extends vertebral column; raises cranial Longissimus thoracis Dorsal branches of thoracic nerves lumbar vertebrae vertebrae, ribs portion of the body Iliac crest, ventral surface of ilium, Accessory processes of lumbar Longissimus lumborum Extends vertebral column Dorsal branches of lumbar nerves lumbar vertebrae vertebrae Area between superior and inferior Greater occipital nerve, posterior rami Semispinalis capitis Transverse processes of T6-C3 Extends head nuchal lines of C1-C5 Fixes thoracic vertebral column and Dorsal branches of cervical and thoracic Semispinalis cervicis Tendon of semispinalis thoracis Spinous processes of C2-C5 raises the neck nerves Fixes vertebral column and raises the Semispinalis thoracis Fascia of longissimus Spinous processes of T6-C6 Dorsal branches of thoracic nerves neck Mamillary, transverse, or articular Dorsal branches of lumbar, thoracic, Multifidus Spinous processes of vertebrae Rotates vertebral column processes and cervical nerves Rotatores longi Transverse processes of T10-T1 Spinous processes of T1-T10 Rotates thoracic vertebral column Dorsal branches of thoracic nerves Rotatores breves Transverse processes of T1-T10 Spinous processes of T1-T10 Rotates thoracic vertebral column Dorsal branches of thoracic nerves Interspinal and Intertransverse Muscles  Name Origin Insertion Function Innervation Spinous processes of Spinous Supports Dorsal branches of caudal cervical, processes of ventroflexion Interspinal cervical, thoracic, thoracic, and adjacent of vertebral and lumbar nerves lumbar vertebrae column vertebrae Fixation and Transverse, Transverse, lateral flexion Dorsal branches of articular, and articular, and of cervical and Intertransverse cervical, thoracic, mamillary mamillary lumbar and lumbar nerves processes processes vertebral column Superficial Layer of Extrinsic Muscles Name Origin Insertion Innervation Function Draws trunk Superficial leaf of cranially, extends lumbosacral fascia, Teres tubercle and Thoracodorsal vertebral column, Latissimus dorsi spinous processes greater tubercle of nerve, caudal supports limb, of lumbar and last humerus pectoral nerves draws limb thoracic vertebrae caudally Supraspinous ligament, dorsal Elevation of limb, Trapezius spinous processes Spine of scapula Accessory nerve draws limb forward of cervical and thoracic vertebrae Supports limb, Crest of greater Manubrium of Cranial pectoral draws limb inward, Superficial pectoral tubercle of sternum nerves forward, and humerus backward Omotransverse: wing atlas/distal end spine scapula/draw neck downward and sideward Deep Layer of Extrinsic Muscles  Name Origin Insertion Function Innervation Sternum, xiphoid Moves trunk cranially, Lesser tubercle of Deep pectoral cartilage, costal extends shoulder joint, Caudal pectoral nerves humerus cartilages draws limb backward Tendon of insertion of Subclavian 1st costal cartilage Stabilizes shoulder joint Cranial thoracic nerves brachiocephalic muscle Spinous processes of Dorsal branches of Cranial angle and dorsal Elevates limb, draws Rhomboid cervical vertebrae, cervical and thoracic border of scapula scapula against trunk dorsal median raphe nerves Supports trunk, moves Transverse processes of Cervical and thoracic Ventral serrate Facies serrata of scapula shoulder, aids in cervical vertebrae, ribs nerves respiration Thoracolumbar fascia, Dorsal serratus cranialis spines of thoracic Ribs 2-10 Lifts ribs for inspiration Intercostal nerves vertebrae Draws last ribs caudally Dorsal serratus caudalis Thoracolumbar fascia Ribs 11-13 Intercostal nerves for expiration Straight Thoracic Muscle  Insertio Name Origin Function Innervation n Rectus Ventral Lateral branch thoracic (m. First rib ends of Inspiration of intercostal rectus ribs 2-4 nerves thoracis) Muscles of the Neck  Name Origin Insertion Function Innervation Accessory nerve, Clavicular tendon and Dorsal neck, mastoid Draws limb cranially, Brachiocephalicus ventral branches of humerus process, occipital bone fixes neck cervical nerves Accessory nerve, Dorsal neck, mastoid Draws limb cranially, Cleidocephalicus Clavicular tendon ventral branches of process, occipital bone fixes neck cervical nerves Draws limb cranially, Ventral branches of Cleidobrachialis Clavicular tendon Humerus fixes neck cervical nerves Accessory nerve, Draws limb cranially, Cleidomastoid Clavicular tendon Mastoid process ventral branches of fixes neck cervical nerves Accessory nerve, Draws limb cranially, Cleidocervical Clavicular tendon Neck ventral branches of fixes neck cervical nerves Draws limb cranially, Cleido-occipital Clavicular tendon Occipital bone fixes