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Everest Muscle Test
Everest Mod G Week 2 Muscle Test
| Question | Answer |
|---|---|
| Pectoralis Major origin | Medial half of clavicle Sternum Cartilage of ribs 1-6 |
| Pectoralis Major insertion | Crest of greater tubercle of humerus |
| Pectoralis Major action all fibers | All Fibers: Adducts & medially rotates shoulder (glenhumoral joint) May assist in elevating the thorax in forced inhalation when arm is fixed Upper Fibers: Flexes shoulder Horizontally adducts shoulder Lower Fibers: Extends shoulder |
| Pectoralis Major nerve | Anterior thoracic nerve from brachial plexus |
| Pectoralis Minor origin | Ribs 3-5 |
| Pectoralis Minor insertion | Coracoid process of scapula |
| Pectoralis Minor action | Depresses the scapula (scapulothoracic joint) Abducts the scapula (scapulothoracic joint) Anteriorly tilts the scapula Assists in forced inhalation when scapula is fixed |
| Pectoralis Minor nerve | Anterior thoracic nerve from brachial plexus |
| Serratus Anterior origin | Surfaces of upper 8 or 9 ribs |
| Serratus Anterior insertion | Anterior surface of medial border of scapula |
| Serratus Anterior action | Depresses the scapula (scapulothoracic joint) Abducts the scapula (scapulothoracic joint) Holds the medial border of the scapula against the rib cage May act in forced inhalation when scapula is stabilized |
| Serratus Anterior nerve | Long thoracic nerve from brachial plexus |
| Subclavius origin | First rib and cartilage |
| Subclavius insertion | Inferior, lateral aspect of clavicle |
| Subclavius action | Draws clavicle inferiorly and anteriorly Elevates first rib Stabilizes the sternoclavicular joint |
| Subclavius nerve | Fifth and sixth cervical nerves |