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Anatomy midterm 2 > Shoulder/Arms > Flashcards

Shoulder/Arms Flashcards

1
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A
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2
Q

(Name of Joint)

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3
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(Name of Muscle)

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7
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8
Q

Humeral torsion

A

Variable angle btwn glenohumeral joint & elbow (throwing)

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9
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10
Q

What is this “joint” called?

A

Thoracoscapular “joint”

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11
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12
Q

Scapular protractors and retractors?

A

Protractors: Serratus Anterior, pectoralis minor

Retractors: Trapezius, rhomboids

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13
Q
A

Trapezius

Inn: accessory nerve

Att: spinous processes, clavicle, scapular spine

Action: scapular elevation, depression, rotation, retraction

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14
Q
A

Levator Scapulae

Att: Transverse process of C1-C4, medial border of scapula

Action: scapular elevation, inferior rotation

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15
Q

(2 muscles)

A

Rhomboid major & minor

Att: Spinous processes of T1-T-4, medial border of scapula

Action: scapular elevation, inferior rotation, retraction

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16
Q
A

Pectoralis minor

Att: coracoid process of scapula; ribs 3-5

Action: Scapular protraction, inferior rotation, depression

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17
Q
A

Serratus Anterior

Att: Ribs 1-9, medial border of scapula

Action: scapular protraction, superior rotation, depression

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18
Q

Name of shoulder joint

A

Glenohumeral joint

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19
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20
Q

Scapulohumeral rhythm

A

Ratio of rotation of scapula to humerous when arm is raised. Variable

21
Q

What muscles are the humeral flexors and extensors?

A

Flexors: deltoid (anterior), pectoralis major, coracobrachalis

Extensors: deltoid (posterior), latissumus dorsi, teres major

22
Q

What muscles are the humeral medial rotators and lateral rotators?

A

Medial rotators: pectoralis major, subscapularis, latissimus dorsi, teres major, deltoid

Lateral rotators: deltoid, infraspinatus, teres minor

23
Q
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Pectoralis major

Att: sternum, clavicle, ribs, greater tubercle of humerus

Action: Humeral adduction, medial rotation, flexion

24
Q
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Latissimus dorsi

Att: Spinous processes, iliac crest, intertubercular groove of humerous

Action: humeral adduction, medial rotation, extension

25
Q
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Deltoid

Att: clavicle, acromion, scapular spine, deltoid tuberosity

Action: Humeral abduction, rotation, flexion/extension

26
Q
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Coracobrachialis

Att: coracoid process of scapula, medial humeral shaft

Actions: Humeral adduction, flexion

27
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Teres major

Att: Inferior angle of scapula, lesser tubercle of humerus

Actions: humeral adduction, extension, medial rotation

28
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29
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Supraspinatus

Att: Supraspinous fossa, greater tubercle of humerus

Action: humeral abduction, stabilize joint, NOT rotation

30
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Subscapularis

Att: subscapular fossa, lesser tubercle of humerus

Action: medial rotation of humerus, stabilize joint

31
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A

Infraspinatus

Att: infraspinous fossa, greater tubercle of humerus

Action: lateral rotation of humerus, stabilize joint

32
Q
A

Teres minor

Att: lateral border of scapula, greater tubercle of humerus

Action: lateral rotation of humerus, stabilize joint

33
Q

Rotator cuff injury

A

Tearing of supraspinatus tendon

Very common: athletes, elderly

34
Q

Elbow flexors and extensors?

A

Flexors: Biceps brachii, Brachialis

Extensors: Triceps brachii

35
Q
A

Biceps brachii

Att: glenoid labrum, coracoid process of scapula, radial tuberosity

Action: flex elbow

Supinates forearm

Flexes & abducts shoulder

36
Q
A

Brachialis

Att: Humeral shaft, ulnar tuberosity

Action: elbow flexion

37
Q

Triceps brachii

A

Att: inferior glenoid lip, humeral shaft, olecronon process of ulna

Action: elbow extension

38
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39
Q

Arm innervation source?

A

Brachial plexus

40
Q

Brachial plexus mnemonic

A
41
Q

Brachial plexus roots’ vertebrae?

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C5, C6, C7, C8, T1

42
Q

Brachial plexus trunks?

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43
Q

Brachial plexus branches?

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44
Q

Brachial plexus Cords?

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45
Q

Axillary Nerve innervates?

Radial nerve innervates?

Musculocutaneous nerve innervates?

A

Axillary: Deltoid, Teres minor

Radial: Triceps brachii

Musculocutaneous: coracobrachialis, biceps brachii, brachialis

Anatomy midterm 2 (6 decks)

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