2756749
Description
Flashcards by Christopher Schneider, updated more than 1 year ago
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Created by Christopher Schneider
almost 9 years ago
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| Question | Answer |
| Origin of pectoralis major clavicular head | Anterior surface of medial clavicle |
| Insertion of pectoralis major | lateral lip of intertubercular sulcus |
| Origin of the pectoralis major sternocostal head | anterior surface of sternum and superior six costal cartilages |
| Innervation of pectoralis major | lateral pectoral nerve and medial pectoral nerve |
| Actions of pectoralis major | Both: ADDUCT and medially ROTATE humerus Clavicular: FLEXES humerus Sternocostal head: EXTENDS humerus from a flexed position |
| Origin of Pectoralis minor | Ribs 3-5 near their costal cartilages |
| Insertion of pectoralis minor | Coracoid process |
| innervation of pectoralis minor | medial pectoral nerve |
| Action of pectoralis minor | STABILIZES scapula by drawing it inferiorly and anteriorly against thoracic wall |
| Origin of subclavius | Junction of the 1st rib and costal cartilage |
| Insertion of subclavius | Inferior, middle clavicle |
| innervation of subclavius | nerve to subclavius |
| action of subclavius | ANCHORS and DEPRESSES clavicle |
| Origin of Serratus anterior | Lateral parts of ribs 1-8 |
| Insertion of serratus anterior | anterior surface of medial border of scapula |
| Innervation of serratus anterior | long thoracic nerve |
| Actions of serratus anterior | PROTRACTS scapula HOLDS scapula against the thoracic wall superior ROTATION of scapula |
| Apex boundary of the Axilla | Cervico-axillary canal |
| Base boundary of axilla | armpit (skin, subcutaneos tissue, axillary fascia) |
| anterior boundary of axilla | Pectoralis major, pectoralis minor, pectoral and clavipectoral fascia |
| Lateral boundary of the axilla | intertubercular groove of the humerus |
| Medial boundary of the axilla | thoracic wall and serratus anterior |
| Posterior boundary of the axilla | superiorly via the scapula and subscapularis Inferiorly via teres major and latissimus dorsi |
| Contents within the axillary sheath | axillary artery & branches Axillary vein & tributaries Brachial plexus (cords and branches) |
| Contents outside of the axillary sheath | Axillary lymph nodes & lymphatic vessels Axillary fat |
| Branches of the thoracoacromial artery | Clavicular Acromial Deltoid Pectoral |
| Major branches from the Axillary artery | Superior thoracic Artery Thoracoacromial artery Lateral thoracic artery Subscapular artery Anterior circumflex humeral artery Posterior circumflex humeral artery |
| Major branches of subclavian artery | Vertebral artery Internal thoracic artery Thyrocervical trunk Costocervical trunk Dorsal Scapular artery |
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