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Equine Anatomy > Intrinsic Muscles Of Thoracic Limb > Flashcards

Intrinsic Muscles Of Thoracic Limb Flashcards

1
Q

Origin of INTEROSSEUS

A

Palmer surface of distal row of carpal bones and proximal Palmer surface of the third metacarpal (cannon) bone

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2
Q

Insertion of INTEROSSEUS

A

Proximal sesamoid and e tensor process of distal phalanx

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3
Q

Function of INTEROSSEUS

A

Prevents overextension of metacarpophalangeal and interphalangeal and is part of stay apparatus

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4
Q

Origin of SUBSCAPULARIS

A

Subscapular fossa

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5
Q

Insertion of SUBSCAPULARIS

A

Lesser tubercle of humerus

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6
Q

Innervation of SUBSCAPULARIS

A

Subscapular nerve

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7
Q

Action of SUBSCAPULARIS

A

Addicts humerus and pronates limb

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8
Q

Origin of TERES MAJOR

A

Caudal angle and caudal border of scapula

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9
Q

Insertion of TERES MAJOR

A

Teres tuberosity

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10
Q

Innervation of TERES MAJOR

A

Axillary nerve

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11
Q

Action of TERES MAJOR

A

Pronates and adducts humerus

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12
Q

Origin of TERES MINOR

A

Caudal border of scapula

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13
Q

Insertion of TERES MINOR

A

Ridge connecting greater tubercle and deltoid tuberosity

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14
Q

Innervation of TERES MINOR

A

Axillary nerve

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15
Q

Action of TERES MINOR

A

Assists in shoulder flexion and arm abduction, and supination

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16
Q

Origin of INFRASPINATUS

A

Infraspinatus fossa

17
Q

Insertion of INFRASPINATUS

A

Greater tubercle of humerus

18
Q

Inner action of INFRASPINATUS

A

Suprascapula nerve

19
Q

Action of INFRASPINATUS

A

Abducts arm and externally rotates it. Makes fine adjustments to angle of shoulder joint

20
Q

Origin of SUPRASPINATUS

A

Supraspinous fossa of scapula

21
Q

Insertion of INFRASPINATUS

A

Craniodorsal parts of bother greater and lesser tubercles of humerus

22
Q

Innervation of SUPRASPINATUS

A

Suprascapular nerve

23
Q

Action of SUPRASPINATUS

A

Provides lateral support for glenohumeral joint

Equine Anatomy (6 decks)

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