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Forelimb > Muscles > Flashcards

Muscles Flashcards

1
Q

What is the origin of the Superficial pectoral muscle?

A

First two sternebrae

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2
Q

What is the origin of the Deep pectoral muscle?

A

The ventral part of the sternum; caudal end of sternum

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3
Q

What is the insertion of the Superficial pectoral muscle?

A

The entire crest of greater tubercle

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4
Q

What is the innervation of the Superficial pectoral muscle?

A

Cranial pectoral nerves (C7, C8)

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5
Q

What is the action of the Superficial pectoral muscle?

A

Adducts the forelimb

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6
Q

What is the insertion of the Deep pectoral muscle?

A

Crest of greater tubercle & partly on lesser tubercle of the humerus

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7
Q

What is the innervation of the Deep pectoral muscle?

A

Caudal pectoral nerves (C8, T1)

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8
Q

What is the action of the Deep pectoral muscle?

A

Adducts the forelimb, draw limb caudally, flexes the shoulder joint

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9
Q

What are the two parts of the Brachiocephalicus muscle?

A

Cleidobrachialis and Cleidocephalicus

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10
Q

What is the origin of the Cleidobrachialis muscle?

A

Faint line of clavicular insertion (fibrous vestigial clavicle)

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11
Q

What is the insertion of the Cleidobrachialis muscle?

A

Distal end of the cranial border of the humerus

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12
Q

What is the action of the Cleidobrachialis muscle?

A

Protract the limb, extend the shoulder, draws the head and neck to the side

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13
Q

What is the innervation of the Cleidobrachialis muscle?

A

Accessory nerve and ventral branches of cervical spinal nerves

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14
Q

What is the origin of the Cleidocephalicus muscle?

A

Mid-dorsal fibrous cervical raphe

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15
Q

What is the insertion of the Cleidocephalicus muscle?

A

Faint line of clavicular insertion

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16
Q

What is the action of the Cleidocephalicus muscle?

A

Draw the head and neck to the side

17
Q

What is the innervation of the Cleidocephalicus muscle?

A

Accessory nerve

18
Q

What is the origin of the Omotransversarius muscle?

A

Transverse wing of the atlas

19
Q

What is the insertion of the Omotransversarius muscle?

A

Distal end of the spine of scapula

20
Q

What is the action of the Omotransversarius muscle?

A

Protract the limb also

21
Q

What is the innervation of the Omotransversarius muscle?

A

Accessory nerve

22
Q

What are the two parts of the Trapezius muscle?

A

Cervical and thoracic parts

23
Q

What is the origin of the Rhomboideus muscle?

A

Median raphe of the neck; spinous processes of the first seven thoracic vertebrae

24
Q

What is the action of the Rhomboideus muscle?

A

Elevates forelimb and draw scapula against trunck

25
Q

What is the innervation of the Rhomboideus muscle?

A

Ventral branches of the cervical and thoracic spinal nerves

26
Q

What is the origin of the Latissimus dorsi muscle?

A

Thoracolumbar fascia; spinous processes of the lumbar and T7/8

27
Q

What is the insertion of the Latissimus dorsi muscle?

A

Teres major tuberosity of the humerus

28
Q

What is the action of the Latissimus dorsi muscle?

A

Retraction of the forelimb, flex the shoulder joint

29
Q

What is the innervation of the Latissimus dorsi muscle?

A

Thoracodorsal nerve (C7, C8, T1)

30
Q

What is the origin of the Serratus ventralis muscle?

A

Serrated face of the scapula

31
Q

What is the action of the Rhomboideus muscle?

A

Elevates the forelimb and draws scapula against trunk

32
Q

What is the innervation of the Serratus ventralis muscle?

A

Ventral branches of cervical spinal nerves and long thoracic nerves

33
Q

What are the two parts of the Serratus ventralis muscle?

A

Serratus ventralis cervicis (cranial) and Serratus ventralis thoracis (caudal)

34
Q

What is the action of the cranial part of the Serratus ventralis muscle?

A

Retractor of the forelimb

35
Q

What is the action of the caudal part of the Serratus ventralis muscle?

A

Protractor of the forelimb; also supports the trunk, depresses the scapula

Forelimb (4 decks)

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