Page 2 (Arm & Forearm) Flashcards
Triceps brachii - lateral head origin
Humerus proximal to radial groove
Triceps brachii - long head origin
Infraglenoid tubercle of scapula
Triceps brachii - medial head origin
Humerus distal to radial groove
Triceps brachii - all three heads - insertion
olecranon process of ulna
Triceps brachii - innervation
Radial nerve (C6, C7, C8)
Triceps brachii actions - two (arm) and one (forearm)
Extends and adducts arm
Extends the forearm
Biceps brachii - long head origin
Supraglenoid tubercle of the scapula
Biceps brachii - short head origin
Tip of the coracoid process of scapula
Biceps brachii - insertion
Radial tuberosity and its fascia (via bicipital aponeurosis)
Biceps brachii - actions (2 forearm, 1 arm)
Flexes and supinates forearm
Flexes arm (long head)
Biceps brachii - innervation
Musculocutaenous (C5, C6, C7)
Brachialis - insertion
Coronoid process and tuberosity of ulna
Brachialis - origin
Anterior surface of distal half of humerus
Brachialis - innervation
Musculocutaenous (C5, C6)
Brachialis - action
Flex the forearm
Coracobrachialis - origin
Coracoid process of Scapula
Coracobrachialis - insertion
Medial side of humerus at mid-shaft
Coracobrachialis - innervation
Musculocutaenous (C5, C6, C7)
Coracobrachialis - actions (2)
Flexes and adducts the arm
Pronator teres - origins (2)
medial epicondyle and coronoid process of ulna
Pronator teres - action
Pronates forearm
Pronator teres - insertion
Midpoint of radius
Flexor carpi radialis - origin
Medial epicondyle of humerus
Pronator teres - innervation
Median nerve (C6, C7)
Flexor carpi radialis - insertion
Base of second and third metacarpals
Flexor carpi radialis - actions (2)
Flexes wrist, abducts hand
Flexor carpi radialis - innervation
Median nerve (C6, C7)
Subscapularis - action
Medially rotates the arm
Subscapularis - origin
Subscapular fossa
Subscapularis - insertion
Lesser tubercle of the humerus
Part of Rotator Cuff - SITS
Subscapularis - innervations (2)
Upper and lower subscapularis nerves (C5, C6, C7)
Teres major - insertion
Bicipital groove (medial lip)
Teres Major - origin
Inferior angle of scapula
Rhomboid major - origin
Spinous process of vertebrae T2-T5
Teres Major - innervation
Lower subscapular nerve (C5, C6)
Part of PLT
Teres Major - actions (2)
Adducts the arm, medially rotates arm
Rhomboid major - insertion
Medial border of scapula (inferior to spine of scapula)
Rhomboid major - action (3)
Retracts, elevates, and rotates the scapula inferiorly
Rhomboid major - innervation
Dorsal Scapular nerve (C4, C5)
Rhomboid minor - insertion
Medial border of scapula (at spine of scapula)
Rhomboid minor - origins (3)
Inferior end of nuchal ligament
Spinous process of vertebrae C7 and T1
Rhomboid minor - actions (3)
Retracts, elevates, and rotates the scapula inferiorly
Rhomboid minor - Innervation
Dorsal Scapular nerve (C4, C5)
Levator scapulae - origin
Transverse processes of C1-C4 vertebrae
Levator scapulae - insertion
Medial border of scapula
Levator scapulae - actions (2)
Elevates and downward rotation of scapula
Levator scapula - innervations (2)
Dorsal scapula (C4, C5) and cervical nerve (C3, C4)