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BIO 100 Anatomy and Physiology > Shoulder, Upper arm muscles > Flashcards

Shoulder, Upper arm muscles Flashcards

1
Q

Origin of Deltoid

A

Lateral one-third of clavicle, acromion, and spine of the scapula

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2
Q

Insertion of Deltoid

A

Deltoid tuberosity

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3
Q

All fibers of Deltoid perform this action

A

Abduct the shoulder (glenohumeral joint)

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4
Q

Anterior fibers of Deltoid perform these 3 actions

A
  • Flex the shoulder - Medially rotate the shoulder - Horizontally abduct the shoulder
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5
Q

Origin of Teres Major

A

Inferior angle and lower one-third of lateral border of scapula

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6
Q

Insertion of Teres Major

A

Crest of the lesser tubercle of the humerus

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7
Q

The 3 actions of Teres Major

A
  • Extend the shoulder (G/H joint) - Adduct the shoulder (G/H joint) -Medially rotate the shoulder (GH joint)
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8
Q

Origin of Supraspinatus

A

Supraspinous fossa of the scapula

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9
Q

Insertion of Supraspinatus

A

Greater tubercle of the humerus

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10
Q

The 2 actions of the Supraspinatus

A
  • Abduct the shoulder (GH joint) - Stabilize the head of the humerus in glenoid cavity
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11
Q

Origin of Infraspinatus

A

Infraspinous fossa of the scapula

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12
Q

Insertion of Infraspinatus

A

Greater tubercle of the humerus

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13
Q

The 3 actions of Infraspinatus

A
  • Laterally rotate the shoulder (GH joint) - Adduct the shoulder (GH joint) -Stabilize the head of the humerus in glenoid cavity
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14
Q

Origin of Teres Minor

A

Upper two-thirds of lateral border of the scapula

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15
Q

Insertion of Teres Minor

A

Greater tubercle of the humerus

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16
Q

The 3 actions of Teres Minor

A
  • Laterally rotate the shoulder (GH joint) - Adduct the shoulder (GH joint) - Stabilize the head of the humerus in glenoid cavity
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17
Q

Origin of Subscapularis

A

subscapular fossa of the scapula

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18
Q

Insertion of Subscapularis

A

Lesser tubercle of the humerus

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19
Q

The 2 actions of Subscapularis

A
  • Medially rotate the shoulder (GH joint) -Stabilize the head of the humerus in glenoid cavity
20
Q

Origin of Biceps Brachii

A

Short head: Coracoid process of the scapula Long head: Supraglenoid tubercle of scapula

21
Q

Insertion of Biceps Brachii

A

Tuberosity of the radius and aponeurosis of biceps brachii

22
Q

The 3 actions of Biceps Brachii

A
  • Flex the elbow (humeroulnar joint) -Supinate the forearm (radioulnar joints) - Flex the shoulder (GH joint)
23
Q

Origin of Triceps Brachii

A

Long head: Infraglenoid tubercle of the scapula Lateral head: Posterior surface of proximal half of the humerus Medial head: Posterior surface of distal half of the humerus

24
Q

Insertion of Triceps Brachii

A

Olecranon process of the ulna

25
Q

All heads of the Triceps Brachii perform this action

A

Extend the elbow (humeroulnar joint)

26
Q

Long head of the Triceps Brachii perform these 2 actions

A
  • Extend the shoulder (humeroulnar joint) - Adduct the shoulder (GH joint)
27
Q

Origin of Coracobrachialis

A

Coracoid process of the scapula

28
Q

Insertion of Coracobrachialis

A

Medial surface of mid-humeral shaft

29
Q

The 2 actions of Coracobrachialis

A
  • Flex the shoulder (GH joint) - Adduct the shoulder (GH joint)
30
Q

Name the muscle and its two heads

A

biceps brachii

short head is medial

Long head is lateral

31
Q

Name the muscle

A

Coracobrachialis

32
Q

Name the muscle

33
Q

Name the muscle

A

Infraspinatus

34
Q

Name the muscle and its origin and insertion

A

Biceps brachii

Origin: short head is corocoid process of scapula

Long head is superglenoid tubercle of the scapula

Insertion: Tuberosity of the radius and aponeurosis of biceps brachii

35
Q

Name the muscle, origin, and insertion

A

Coracobrachialis

Origin: coracoid process of scapula

Insertion: Medial surface of the mid-humeral shaft

36
Q

Name the muscle, origin, insertion

A

Deltoid

Origin: Lateral one-third of clavicle, acromion, and spine of scapula

Insertion: Deltoid Tuberosity

37
Q

Name the muscle, origin, insertion

A

Infraspinatus

Origin: infraspinous fossa of scapula

Insertion: Greater tubercle of humerus

38
Q

Name the muscle, origin, insertion

A

Subscapularis

Origin: Subscapular fossa of the scapula

Insertion: Lesser tubercle of the humerus

39
Q

Name the muscle, origin, insertion

A

Supraspinatus

Origin: supraspinous fossa of the scapula

Insertion: Greater tubercle of the humerus

40
Q

Name the muscle, origin, insertion

A

Teres Major

Origin: Inferior angle and lower one-third of lateral border of the scapula

Insertion: Crest of the lesser tubercle of the humerus

41
Q

Name the muscle, origin, and insertion

A

Teres Minor

Origin: Upper two-thirds of lateral border of scapula

Insertion: Greater tubercle of the humerus

42
Q

Name the muscle

A

Subscapularis

43
Q

Name that muscle

A

Supraspinatus

44
Q

Name that muscle

A

Teres Major

45
Q

Name that muscle

A

Teres Minor

46
Q

Name that muscle (and its three heads)

A

Triceps Brachii

BIO 100 Anatomy and Physiology (23 decks)

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