A&P1 Lab - Chest, abdomen, and back muscles (chart)

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9 Terms

1
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Origin: ribs

Insertion: Central tendon sheet

Action: Expands thoracic cavity to produce inhalation

Innervation: Phrenic

2
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Origin: Lower ribs

Insertion: Linea alba

Action: Compresses abdomen

Innervation: Intercostal

3
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Origin: iliac crest

Insertion: Linea alba

Action: Compresses abdomen

Innervation: Intercostal

4
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Origin: Clavicle

Insertion: Greater tubercle

Action: Flexes shoulder

Innervation: Pectorals

5
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Origin: Ribs 3-5

Insertion: Coracoid process of scapula

Action: Depresses scapula

Innervation: Median pectoral

6
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Origin: Pubis

Insertion: Xiphoid process

Action: Depresses ribs

Innervation: Intercostal

7
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Origin: Ribs 1-9

Insertion: Vertebral border of scapula

Action: Protracts and rotates scapula

Innervation: Long thoracic

8
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Origin: lower ribs

Insertion: Linea alba

Action: Compresses abdomen

Innervation: Intercostal

9
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Origin: Occipital bone

Insertion: scapular spine

Action: Elevates and adducts scapula

Innervation: Cervical spinals