Breast, pectoral, and axillary region

Pregunta	Respuesta
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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Breast, pectoral, and axillary region

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	Creado por Christopher Schneider hace más de 9 años