Axillary & Arm Flashcards
Bony Landmark: Anatomical Neck
Site of glenohumeral joint capsule
Bony Landmark: Humerus Head
Articulates with glenoid cavity
Bony Landmark: Greater Tubercle (3 Facets)
Superior Facet - Supraspinatus
Middle Facet - Infraspinatus
Inferior Facet - Teres Minor
Bony Landmark: Lesser Tubercle
Subscapularis
Bony Landmark: Intertubercular Sulcus (3 Attachments)
Lateral Lip: Pec Major
Medial Lip: Teres Major
Floor: Latissimus Dorsi
Bony Landmark: Shaft (3 Landmarks)
Surgical Neck
Sulcus for Radial Nerve
Deltoid Tuberosity
Bony Landmark: Capitulum
Articulates with Radius
Bony Landmark: Trochlea
Articulates with Trochlear Notch of Ulna
Bony Landmark: Lateral Epicondyle
Common Extensor Tendon
Bony Landmark: Lateral Supracondylar Ridge
Extensor Carpi Radials Longus
& Brachioradialis
Bony Landmark: Coronoid Fossa
Accommodates the Coronoid Process of Ulna
Bony Landmark: Medial Epicondyle
Common Flexor Tendon
Bony Landmark: Olecranon Fossa
Accommodates the Olecranon Process of Ulna
5 Muscles of Axillary & Arm
Anconeus
Biceps Brachii
Brachialis
Coracobrachialis
Triceps Brachii
Anconeus - Actions
Extension of Elbow
Anconeus - Innervation
Radial Nerve (C7-C8)
Biceps Brachii - Action
Flexion of shoulder & elbow
Supinate forearm
Biceps Brachii - Innervation
Musculocutaneous Nerve (C5-C6)
Brachialis - Action
Flexion of Elbow
Brachialis - Innervation
Musculocutaneous Nerve & Small Branch from Radial Nerve (C5-C6)
Coracobrachialis - Action
Flexion & Adduction of Shoulder
Coracobrachialis - Innervation
Musculocutaneous Nerve (C6-C7)
Triceps Brachii - Action
Extension of Shouder (long head)
Extension of Elbow (all heads)
Triceps Brachii - Innervation
Radial Nerve (C6-T1)