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Anatomy Lab > OP Group 2 > Flashcards

OP Group 2 Flashcards

1
Q

Deltoid - Origin

A

Lateral 1/3 of clavicle, acromion and spine of scapula

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2
Q

Deltoid - Insertion

A

Deltoid tuberosity of humerus

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3
Q

Deltoid - Action

A

Abduction of shoulder (middle fibers), flexion and horizontal adduction (anterior fibers), extension and horizontal abduction (posterior fibers)

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4
Q

Deltoid - Innervation

A

Axillary nerve

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5
Q

Teres Minor - Origin

A

Superior lateral border of scapula

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6
Q

Teres Minor - Insertion

A

Greater tubercle of humerus

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7
Q

Teres Minor - Action

A

Lateral rotation of shoulder, stabilizes glenohumeral joint

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8
Q

Teres Minor - Innervation

A

Axillary nerve

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9
Q

Biceps Brachii - Origin

A

Long head: supraglenoid tubercle and glenohumeral labrum; Short head: coracoid process of scapula

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10
Q

Biceps Brachii - Insertion

A

Radial tuberosity and bicipital aponeurosis

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11
Q

Biceps Brachii - Action

A

Flexion and supination of elbow, flexion of shoulder

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12
Q

Biceps Brachii - Innervation

A

Musculocutaneous nerve

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13
Q

Supraspinatus - Origin

A

Supraspinous fossa of scapula

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14
Q

Supraspinatus - Insertion

A

Greater tubercle of humerus

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15
Q

Supraspinatus - Action

A

Abduction of shoulder, stabilizes glenohumeral joint

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16
Q

Supraspinatus - Innervation

A

Suprascapular nerve

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17
Q

Subscapularis - Origin

A

Subscapular fossa of scapula

18
Q

Subscapularis - Insertion

A

Lesser tubercle of humerus

19
Q

Subscapularis - Action

A

Medial rotation of shoulder, stabilizes glenohumeral joint

20
Q

Subscapularis - Innervation

A

Upper and lower subscapular nerves

21
Q

Infraspinatus - Origin

A

Infraspinous fossa, inferior portion of spine of scapula

22
Q

Infraspinatus - Insertion

A

Greater tubercle of humerus

23
Q

Infraspinatus - Action

A

Lateral rotation of shoulder, stabilizes glenohumeral joint

24
Q

Infraspinatus - Innervation

A

Suprascapular nerve

25
Q

Teres Major - Origin

A

Inferior, lateral border of scapula

26
Q

Teres Major - Insertion

A

Medial lip of bicipital groove of humerus

27
Q

Teres Major - Action

A

Medial rotation and adduction of shoulder

28
Q

Teres Major - Innervation

A

Lower subscapular nerve

29
Q

Pectoralis Major - Origin

A

Clavicular fibers: medial ½ of clavicle; Sternal fibers: anterior sternum; Costal fibers: costal cartilage of ribs 1-7

30
Q

Pectoralis Major - Insertion

A

Lateral lip of bicipital groove of humerus

31
Q

Pectoralis Major - Action

A

Adduction and medial rotation of shoulder, horizontal adduction of shoulder

32
Q

Pectoralis Major - Innervation

A

Medial and lateral pectoral nerves

33
Q

What is the origin of the Brachialis muscle?

A

Anterior distal ½ of humerus

34
Q

What is the insertion point of the Brachialis muscle?

A

Ulnar tuberosity and coronoid process of ulna

35
Q

What is the primary action of the Brachialis muscle?

A

Flexion of elbow (main elbow flexor)

36
Q

What nerves innervate the Brachialis muscle?

A

Musculocutaneous and radial nerve

37
Q

What is the origin of the long head of the Triceps Brachii?

A

Infraglenoid tubercle and neck of scapula

38
Q

What is the origin of the lateral head of the Triceps Brachii?

A

Upper half of posterior surface of shaft of humerus (above radial groove)

39
Q

What is the origin of the deep (medial) head of the Triceps Brachii?

A

Posterior shaft of humerus (below radial groove)

40
Q

What is the insertion point of the Triceps Brachii?

A

Olecranon process

41
Q

What is the primary action of the Triceps Brachii?

A

Extension of elbow

42
Q

What is the innervation of the Triceps Brachii?

A

Radial nerve (axillary nerve - long head)

Anatomy Lab (18 decks)

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