Term
| What is the pectoral girdle? |
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Definition
| Where the clavicle meets the scapula |
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Term
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Definition
1. clavicle
2. acromion process of the scapula
3. greater tubercle of the humerus
4. intertubercular sulcus
5. lesser tubercle of the humerus
6. coracoid process of the scapula
7. subscapular fossa
8. suprascapular notch |
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Term
| At what vertebral level can one find the superior angle of the scapula? The inferior angle? |
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Definition
| Superior = T2, Inferior = T7 |
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Term
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Definition
1. superior angle
2. supraspinous fossa
3. suprascapular notch
4. acromion process of the scapula
5. spiral/radial groove of the humerus
6. head of the humerus
7. glenoid fossa
8. spine of the scapula
9. infraspinous fossa
10. inferior angle of the scapula |
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Term
| What structure crosses and creates a "foramen" at the suprascapular notch? |
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Definition
| The transverse scapular ligament. |
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Term
| What travels through the suprascapular foramen? |
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Definition
| The suprascapular artery (branch of subclavian artery) and suprascapular nerve (derived from upper trunk, C5-C6). |
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Term
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Definition
1. Trapezius
2. Latissimus dorsi
3. Levator scapulae
4. Rhomboid minor
5. Rhomboid major
6. Serratus anterior |
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Term
| What innervates the trapezius? |
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Definition
| CNXI, the Accessory Nerve |
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Term
| What innervates the Latissimus dorsi? |
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Definition
| thoracodorsal nerve, from the posterior cord of the brachial plexus (C6,7,8) |
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Term
| What innervates the levator scapulae? |
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Definition
| The dorsal scapular nerve, from the ventral ramus of C5 |
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Term
| What innervates the rhomboid muscles (major and minor)? |
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Definition
| dorsal scapular nerve, ventral ramus of C5 |
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Term
| What innervates the serratus anterior? |
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Definition
| long thoracic nerve, from the ventral rami of C5,6,7 |
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Term
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Definition
1. deltoid
2. abduct the arm 90 deg.
3. axillary n. (C5-6) |
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Term
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Definition
1. supraspinatus
2. abduct arm the first 15 deg.
3. suprascapular n. (C5-6) |
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Term
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Definition
1. infraspinatus
2. lateral rotator of arm
3. suprascapular n. |
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Term
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Definition
1. teres minor
2. lateral rotator of arm
3. axillary n. (C5-C6) |
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Term
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Definition
1. teres major
2. extensor and adductor of arm
3. lower subscapular n. (C5-6) |
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Term
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Definition
1. long head of triceps
2. extensor of arm
3. radial n.
Note - this is an important landmark muscle. Also, all extensors are innervated by the radial nerve. |
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Term
| What is the most important motion of the shoulder to examine for nerve lesions on C5-C6? |
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Definition
| Abduction, bringing the arm away from the body. |
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Term
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Definition
| Triangular space.
Borders include the teres minor (superior), teres major (inferior) and long head of triceps (lateral).
Contents are the scapular circumflex artery. |
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Term
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Definition
| Quadrangular space.
Borders include teres minor (superior), teres major (deep), long head of triceps (medial), shaft of humerus (lateral).
Contents include the axillary nerve and the posterior humeral circumflex artery. |
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Term
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Definition
1. Acromioclavicular ligament. Attaches to the acromion process of the scapula and the clavicle.
2. Coricoacromial ligament. Attaches to the coracoid and acromion processes of the scapula.
3. Trapezoid coracoclavicular ligament attaches to the clavicle and coracoid process.
4. Conoid Coracoclavicular ligament attaches to the clavicle and coracoid process.
5. Joint capsule (synovial capsule) |
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Term
| What happens if you tear the ligaments holding your shoulder to your clavicle? |
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Definition
| Only muscle will be left holding the shoulder to the body; the clavicle is the only articulation point between the shoulder and the body wall. |
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Term
| Where is the weakest point of the shoulder joint? |
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Definition
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Term
| What four muscles make up the musculotendinous cuff of the shoulder? (ie rotator cuff) |
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Definition
| The supraspinatus (superior), subscapularis (anterior), infraspinatus (posterior), and teres minor (posterior) |
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