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KN 251 Week 14 Muscl

Thorax, Abdomen, and Anterior Neck

TermDefinition
Intercostal Muscles Action: External - Elevates rib cage, spreading the ribs, Internal- Depressed rib cage, pulling ribs closer together Innervation: Intercostal Origin: N/A Insertion: N/A
Serratus Anterior Action: Scapular protraction and upward scapular rotation Innervation: Long thoracic nerve Origin: First 9 ribs Insertion: Medial border of scapula
Serratus Posterior Superior Action: Elevates ribs Innervation: Intercostal Origin: N/A Insertion: N/A
Serratus Posterior Inferior Action: Depresses ribs Innervation: Intercostal Origin: N/A Insertion: N/A
Splenius Capitis Action: Bilaterally - Neck extension, Unilaterally - Ipsilateral lateral flexion and ipsilateral head rotation Innervation: Dorsal Rami Origin: N/A Insertion: N/A
Splenius Cervicis Action: Bilaterally - Extend cervical spine, Unilaterally - Ipsilateral lateral flexion and rotation of cervical spine Innervation: Dorsal Rami Origin: N/A Insertion: N/A
Iliocostalis Action: Extend and ipsilateral lateral flexion of vertebral column Innervation: Dorsal Rami Origin: N/A Insertion: N/A Erector Spinae
Longissimus Action: Extend the vertebral column, ipsilateral lateral flexion of vertebral column Innervation: Dorsal Rami Origin: N/A Insertion: N/A Erector Spinae
Spinalis Action: Extend the vertebral column Innervation: Dorsal Rami Origin: N/A Insertion: N/A
Semispinalis Action: Extend the vertebral column capitis and cervicis extend the head contralateral trunk/head rotation Innervation: Dorsal Rami Origin: Transverse Processes Insertion: Spinous Processes Transversospinalis
Multifidus Action: Innervation: Origin: Insertion:
Created by: mprez2
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