19331948
Description
Flashcards by Hugh Roberts, updated more than 1 year ago
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Created by Hugh Roberts
about 6 years ago
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| Question | Answer |
| 4 muscles of the rotator cuff | 1. Supraspinatus 2. Infraspinatus 3. Teres minor 4. Subscapularis |
| Supraspinatus - origin | Supraspinous fossa of scapula |
| Supraspinatus - insertion | Greater tuberosity of humerus |
| Spuraspinatus - innervation | Suprascapular nerve |
| Supraspinatus - function | First 15 degrees of abduction of the shoulder |
| Infraspinatus - origin | Infraspinous fossa of scapula |
| Infraspinatus - insertion | Greater tuberosity of humerus |
| Infraspinatus - innervation | Suprascapular nerve |
| Infraspinatus - function | External rotation of the shoulder |
| Teres minor - origin | Lateral border of scapula |
| Teres minor - insertion | Greater tuberosity of humerus |
| Teres minor - innervation | Axillary nerve |
| Teres minor - function | 1. Weakly adducts the humeral head to prevent it from sliding superiorly during abduction 2. External rotation of the shoulder |
| Teres major - origins | 1. Inferior angle of scapula 2. Inferior lateral border of scapula |
| Teres major - insertion | Crest of lesser tuberosity of humerus |
| Teres major - innervation | Lower subscapular nerve |
| Teres major - functions | 1. Adduction 2. Extension 3. Internal rotation ...of the shoulder |
| Subscapularis - origin | Subscapular fossa of scapula |
| Subscapularis - insertion | Lesser tuberosity of humerus |
| Subscapularis - innervation | Subscapular nerves |
| Subscapularis - function | Internal rotation of the shoulder |
| Deltoid - origins | 1. Acromion 2. Lateral 1/3 of clavicle 3. Spine of scapula |
| Deltoid - insertions | Deltoid tuberosity |
| Deltoid - innervation | Axillary nerve |
| Deltoid - functions | 1. Abduction (15-90 degrees) 2. Internal rotation and flexion (anterior deltoid) 3. External rotation and extension (posterior deltoid) ...of the shoulder |
| Coracobrachialis - origin | Coracoid process |
| Coracobrachialis - insertion | Medial surface of middle of body of humerus |
| Coracobrachialis - innervation | Musculocutaneous nerve |
| Coracobrachialis - function | 1. Adduction of the shoulder 2. Flexion of the shoulder |
| Biceps brachii - origin | 1. Coracoid process (short head) 2. Supraglenoid tubercle (long head) |
| Biceps brachii - insertion | Radial tuberosity |
| Biceps brachii - innervation | Musculocutaneous nerve |
| Biceps brachii - function | 1. Flexion of the shoulder and elbow 2. Supination of the elbow |
| Brachialis - origin | Anterior surface of the distal half of humerus |
| Brachialis - insertion | Ulna tuberosity |
| Brachialis - innervation | 1. Musculocutaneous nerve 2. Radial nerve (double innervation in 70-80% of people) |
| Brachialis - function | Flexion of the elbow |
| Triceps brachii - origin | 1. Infraglenoid tubercle of scapula (long head) 2. Proximal / dorsal surface of humerus (medial and lateral heads) |
| Triceps brachii - insertion | Olecranon of ulna |
| Triceps brachii - innervation | Radial nerve |
| Triceps brachii - function | 1. Extension of the elbow 2. Adduction of the shoulder |
| Anconeus - origin | Lateral epicodyle of humerus |
| Anconeus - insertion | Olecranon of ulna |
| Anconeus - innervation | Radial nerve |
| Anconeus - function | 1. Extension of elbow (trivial) 2. Stabilises the elbow joint |
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