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Macroscopic anatomy > Muscles 2 > Flashcards

Muscles 2 Flashcards

1
Q

What is the origin of supraspinatus?

A

supraspinanous fossa of scapula

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2
Q

What is the insertion of supraspinatus?

A

Greater tubercle of humerus

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3
Q

What is the nerve of supraspinatus?

A

Suprascapular n.

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4
Q

What is the action of supraspinatus?

A

Extend and laterally stabilize the shoulder joint

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5
Q

What is the origin of infraspinatus?

A

Infraspinous fossa of scapula

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6
Q

What is the insertion of infraspinatus?

A

lateral side of the greater tuberble of humerus

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7
Q

What is the nerve of infraspinatus?

A

Suprascapular n.

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8
Q

What is the action of infraspinatus?

A

Extend and laterally stabilize or flex the GH joint, abduct the shoulder, rotate shoulder laterally, lateral stability to shoulder joint

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9
Q

What does the infraspinatus do when the leg is weight bearing?

A

Prevents medial rotation

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10
Q

What is the origin of the scapular part?

A

Spine of scapula

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11
Q

What is the origin of the acromial part?

A

Acromion of scapula

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12
Q

What is the insertion of the deltoideus?

A

Deltoid tuberosity of humerus

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13
Q

What is the nerve of the deltoideus?

A

Axillary n.

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14
Q

What is the action of the deltoideus?

A

Flex the shoulder joint

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15
Q

What is the origin of the teres major?

A

caudal angle and adjacent caudal border of scapula, caudal surface of subscapularis

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16
Q

What is the insertion of the teres major?

A

Teres major tuberosity of the humerus

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17
Q

What is the nerve of the teres major?

A

Axillary n.

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18
Q

What is the action of the teres major?

A

Flex shoulder joint, rotate shoulder medially, and prevent lateral rotation when bearing weight

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19
Q

What is the origin of the teres minor?

A

infraglenoid tubercle and dorsal third of caudal border of scapula

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20
Q

What is the insertion of the teres minor?

A

teres minor tuberosity of humerus

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21
Q

What is the nerve of the teres minor?

A

axillary n.

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22
Q

What is the action of the teres minor?

A

Flex shoulder joint, rotate shoulder laterally, and prevent medial rotation when weight bearing

23
Q

What is the origin of the subscapularis?

A

subscapular fossa of scapula

24
Q

What is the insertion of the subscapularis?

A

lesser tubercle of humerus

25
Q

What is the nerve of the subscapularis?

A

subscapular n.

26
Q

What is the action of the subscapularis?

A

Adduct, extend, and medially stabilize shoulder joint, rotate shoulder medially, when weight bearing prevent lateral rotation

27
Q

What is the origin of the coracobrachialis?

A

coracoid process of the scapula

28
Q

What is the insertion of the coracobrachialis?

A

Lesser tubercle of humerus, proximal to teres major tuberosity

29
Q

What is the nerve of the coracobrachialis?

A

Musculocutaneous n.

30
Q

What is the action of the coracobrachialis?

A

Adduct, extend, and stabilize shoulder joint

31
Q

What is the origin of the long head?

A

caudal border of scapula

32
Q

What is the origin of the medial head?

A

crest of lesser tubercle

33
Q

What is the origin of the accessory head?

A

neck of humerus

34
Q

What is the origin of the lateral head?

A

tricipital lines of humerus

35
Q

What is the insertion of the triceps brachii?

A

olecranon

36
Q

What is the nerve of the triceps brachii?

A

Radial n.

37
Q

What is the action of the triceps brachii?

A

Extend elbow and will also flex shoulder

38
Q

What is the origin of the tensor fasciae antebrachii?

A

fascia covering lateral aspect of latissimus dorsi

39
Q

What is the insertion of the tensor fasciae antebrachii?

A

olecranon (process)

40
Q

What is the nerve of the tensor fasciae antebrachii?

A

Radial n.

41
Q

What is the action of the tensor fasciae antebrachii?

A

Extend elbow

42
Q

What is the origin of the anconeus?

A

lateral supracondylar crest and the lateral medial epicondyles of the humerus

43
Q

What is the insertion of the anconeus?

A

lateral end of olecranon (process)

44
Q

What is the nerve of the anconeus?

A

Radial n.

45
Q

What is the action of the anconeus?

A

Extend elbow

46
Q

What is the origin of the biceps brachii?

A

supraglenoid tubercle of scapula

47
Q

What is the insertion of the biceps brachii?

A

ulnar and radial tuberosities

48
Q

What is the nerve of the biceps brachii?

A

musculocutaneous n.

49
Q

What is the action of the biceps brachii?

A

Flex elbow and extend shoulder

50
Q

What is the origin of the brachialis?

A

proximal third of lateral surface of humerus

51
Q

What is the insertion of the brachialis?

A

ulnar and radial tuberosities

52
Q

What is the nerve of the brachialis?

A

Musculocutaneous n.

53
Q

What is the action of the brachialis?

A

Flex elbow

Macroscopic anatomy (35 decks)

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