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Thoracic Region

Stack #64410

MuscleAttachmentInnervationMain Action(s)
Pectoralis Major Muscle - Clavicular Head Medial 1/2 of clavicle, sternoclavicular joint Lateral Pectoral Nerve Flexion, Adduction of humerous at shoulder
Pectoralis Major Muscle - Sternocostal Head Sternum to 7th rib, sternoclavicular joint Lateral AND Medial Pectoral Nerve Flexion, Adduction of humerous
Pectoralis Minor Muscle Anterior surface of 3rd, 4th and 5th ribs, Coracoid process of scapula Medial Pectoral Nerve Aids in rib elevation
Subclavius Muscle 1st rib, clavicle Subclavian branch of brachial plexus Depresses clavicle
Serratus Anterior Muscle Upper 8 ribs, Deep medial border of scapula Long Thoracic Nerve Protracts scapula and rotates it upward
External Intercostals Between ribs Corresponding intercostal nerves Respiratory muscle
Internal Intercostals Between ribs Corresponding intercostal nerves Depress ribs during expiration
Levator Costarum Muscle Transverse processes, ribs Corresponding thoracic dorsal rami Raises ribcage
Created by: joplinette