Muscles of the Arm (Anterior/Posterior) Flashcards
Biceps Brachii Short Head (Origin & Insertion)
O: Coracoid process of scapula
I: Radial tubersity & bicipital aponeurosis of the antebrachium
Biceps Brachii Short Head (Actions)
Prime mover for flexing the elbow
Supinates foerearm
Biceps Brachii Short Head (Nerve & Artery)
N: Musculocutaneous N
A: Axillary & brachial Aa
Biceps Brachii Long Head (Origin & Insertion)
O: Supraglenoid tubercle of scapula
I: Radial tubersity & bicipital aponeurosis of antebrachium
Biceps Brachii Long Head (Actions)
Prime mover for flexing elbow
Supinates forearm
I/O flexes shoulder
Biceps Brachii Long Head (Nerve & Artery)
N: Musculocutaneous N
A: Axillary & brachial Aa
Brachialis (Origin & Insertion)
O: Ant humerus
I: Ulnar tuberosity & coronoid process
Brachialis (Actions)
Prime mover for flexing elbow
Brachialis (Nerve & Artery)
N: Musculocutaneous N
A: Axillary & brachial Aa
Triceps Brachii Long Head (Origin & Insertion)
O: Infraglenoid tubercle of scapula
I: Ulnar olecranon
Triceps Brachii Long Head (Actions)
Prime mover for extending elbow
Extends & adducts shoulder
Triceps Brachii Long Head (Nerve & Artery)
N: radial N
A: Deep brachial & post humeral circumflex Aa
Triceps Brachii Medial Head (Origin & Insertion)
O: Post humerus inf to radial sulcus
I: Ulnar olecranon
Triceps Brachii Medial Head (Actions)
Prime movers for extending the elbow
Triceps Brachii Medial Head (Nerve & Artery)
N: radial N
A: Deep brachial & post humeral circumflex Aa
Triceps Brachii Lateral Head (Origin & Insertion)
O: Post humerus sup to radial sulcus
I: Ulnar olecranon
Triceps Brachii Lateral Head (Actions)
Prime mover for extending elbow
Triceps Brachii Lateral Head (Nerve & Artery)
N: radial N
A: Deep brachial & post humeral circumflex Aa
Anconeus (Origin & Insertion)
O: Lat epicondyle of humerus
I: Distal olecranon & ulnar distal border
Anconeus (Actions)
Extends elbow
Anconeus (Nerve & Artery)
N: Radial N
A: Deep brachial & post humeral circumflex Aa
Brachioradialis (Origin & Insertion)
O: Lat supracondylar ridge of humerus
I: Distal lat radius to styloid process
Brachioradialis (Actions)
Flexes elbow
Helps pronate & supinate antebrachium
Brachioradialis (Nerve & Artery)
N: Radial N
A: radial, ulnar, & ant interosseus Aa
Coracobrachialis (Origin & Insertion)
O: Coracoid process of scapula
I: Central, medial diaphysis of humerus
Coracobrachialis (Actions)
Flexes & adducts shoulder
Coracobrachialis (Nerve & Artery)
N: Musculocutaneous N
A: Axillary & Brachial Aa
