Muscle review: thoracic limb Flashcards

1
Q

Supraspinatus: origin/insertion

A

Supraspinous fossa to proximal humerus

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2
Q

Supraspinatus: function

A

Stabilize and help extend shoulder joint

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3
Q

Supraspinatus: innervation

A

Suprascapular nerve

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4
Q

Infraspinatus: origin/insertion

A

Infraspinatous fossa to cranial humerus

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5
Q

Infraspinatus: function

A

Stabilize shoulder joint/assist shoulder extension and flexion/shoulder external rotation

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6
Q

Infraspinatus: innervation

A

Suprascapular nerve

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7
Q

Subscapularis: origin/insertion

A

Medial aspect of scapula to medial aspect of humerus

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8
Q

Subscapularis: function

A

Stabilize shoulder joint/assis shoulder flexion/medial rotation

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9
Q

Subscapularis: innervation

A

Subscapular nerve

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10
Q

Deltoideus: origin/insertion

A

2 heads: Acromion (sm. head) and lateral spine of scapula (lg. head) to deltoid tuberosity of humerus

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11
Q

Deltoideus: function

A

Stabilize shoulder joint/flex shoulder joint

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12
Q

Deltoideus: innervation

A

Axillary nerve

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13
Q

Teres major: origin/insertion

A

Caudal border of scapula to teres tuberosity of humerus

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14
Q

Teres major: function

A

Stabilize shoulder joint/flex shoulder/medial rotation of forearm

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15
Q

Teres major: innervation

A

Axillary nerve

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16
Q

Teres minor: origin/insertion

A

Infraglenoid tubercle and caudal scapula to proximal Deltoid tuberosity

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17
Q

Teres minor: function

A

Stabilize shoulder joint/flex shoulder joint/externally rotate forelimb

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18
Q

Teres minor: innervation

A

Axillary nerve

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19
Q

Biceps brachii: origin/insertion

A

Supraglenoid tubercle to proximal 1/3 of radius and ulna

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20
Q

Biceps brachii: function

A

Flex elbow/extend shoulder

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21
Q

Biceps brachii: innervation

A

Musculocutaneous nerve

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22
Q

Brachialis: origin/insertion

A

Proximal humerus to proximal 1/3 of radius and ulna

23
Q

Brachialis: function

A

Flex elbow

24
Q

Brachialis: innervation

A

Musculocutaneous nerve

25
Q

Triceps: origin/insertion

A

4 heads:
Long-ventral spine of scapula
Others-Proximal humerus
All insert on tip of olecranon

26
Q

Triceps: function

A

Extend elbow/Long head flexes shoulder

27
Q

Triceps: innervation

A

Radial nerve

28
Q

Extensor carpi radialis: origin/insertion

A

Lateral epicondyle of humerus to metacarpals 2 and 3

29
Q

Extensor carpi radialis: function

A

Extend carpus

30
Q

Extensor carpi radialis: innervation

A

Radial nerve

31
Q

Common digital extensor: origin/insertion

A

lateral epicondyle of humerus to extensor process of P3 (digits 2-5)

32
Q

Common digital extensor: function

A

Extend 4 principal digits/extend carpus

33
Q

Common digital extensor: innervation

A

Radial nerve

34
Q

Lateral digital extensor: origin/insertion

A

Lateral epicondyle of humerus to P1 of digits 4 and 5

35
Q

Lateral digital extensor: function

A

Extend digits 4 and 5/extend carpus

36
Q

Lateral digital extensor: innervation

A

Radial nerve

37
Q

Ulnaris lateralis/extensor carpi ulnaris: origin/insertion

A

Lateral epicondyle of humerus to accessory carpal bone and 5th metacarpal

38
Q

Ulnaris lateralis/extensor carpi ulnaris: function

A

Extend carpus/abduct carpus

39
Q

Ulnaris lateralis/extensor carpi ulnaris: innervation

A

Radial nerve

40
Q

Abductor pollicus longus: origin/insertion

A

Lateral surface of radius and ulna to medial base of 1st metacarpal

41
Q

Abductor pollicus longus: function

A

Supinates (brings paw face up)

42
Q

Abductor pollicus longus: innervation

A

Radial nerve

43
Q

Deep digital flexor (thoracic limb): origin/insertion

A

Medial epicondyle of humerus to caudal aspect of radius/ulna to palmar aspect of P3 digits 2-5

44
Q

Deep digital flexor (thoracic limb): function

A

Flex digits 2-5/flex carpus

45
Q

Deep digital flexor (thoracic limb): innervation

A

Ulnar nerve

46
Q

Flexor carpi ulnaris: origin/insertion

A

Medial epicondyle of humerus to accessory carpal bone

47
Q

Flexor carpi ulnaris: function

A

Flex carpus

48
Q

Flexor carpi ulnaris: innervation

A

Ulnar nerve

49
Q

Superficial digital flexor (thoracic limb): origin/insertion

A

Medial epicondyle of humerus to palmar aspect of P2 for digits 2-5

50
Q

Superficial digital flexor (thoracic limb): function

A

Flex digits 2-5/flex carpus

51
Q

Superficial digital flexor (thoracic limb): innervation

A

Median nerve

52
Q

Flexor carpi radialis: origin/insertion

A

Medial epicondyle of humerus to MC 2 and 3

53
Q

Flexor carpi radialis: function

A

Flex carpus

54
Q

Flexor carpi radialis: innervation

A

Median nerve