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Veterinary Anatomy > Forelimb Muscles > Flashcards

Forelimb Muscles Flashcards

1
Q

Superficial Pectoral

  1. Descending
  2. Transverse
A 
O: 1.  Manubrium
    2. First two or three sternebrae
I: Crest of greater tubercle of humerus
A: Adduct the forelimb and draw the limb forward or backward
I: Pectorales cranialis n.
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2
Q

Brachiocephalicus

- Cleidobrachialis

A

O: Clavicular intersection
I: Distal cranial border of humerus and crest of greater tubercle
A: Draw limb forward or laterally, draw head and neck to the side
I: Accessory n. and branches of cervical spinal nn.

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3
Q

Brachiocephalicus

  1. Cleidocephalicus
  2. Cleidomastoid
A

O: Clavicular intersection
I: 1. Median raphe of cranial half of neck and
occasionally nuchal crest of occipital bone
2. Mastoid process of temporal bone
A: Draw limb forward or laterally, draw head and neck to the side
I: Accessory n. and branches of cervical spinal nn.

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4
Q

Omotransversarius

A

O: Transverse process (wing) of atlas
I: Distal scapular spine
A: Raise the scapula and move limb foreward
I: Accessory n.

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5
Q

Trapezius

  1. Cervical part
  2. Thoracic part
A 
O: 1. Median raphe of the neck
    2. Supraspinous ligement from T3 - T9
I: Scapular spine
A: Elevate and abduct the forelimb
I: Accessory n.
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6
Q

Rhomboideus

  1. Capitis
  2. Cervicis
  3. Thoracis
A

O: 1. Nuchal crest of occipital bone
2. Median raphe of neck
3. Spinous processes of T1 - T7
I: 1. Cranial dorsal border of scapula
2 +3: Dorsal border of scapula
A: Elevate limb and pull limb and shoulder forward or backward, draw the scapula against the trunk
I: Rami dorsales of cervicales et thoracicales nn.

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7
Q

Deep Pectoral

A

O: Ventral sternum (deep abdominal fascia at caudal sternum)
I: Lesser tubercle of humerus, greater tubercle of humerus, crest of greater tubercle
A: Adduct and retract forelimb
I: Pectorales caudalis and pectorales cranialis nn.

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8
Q

Latissimus dorsi

A

O: Thoracolumbar fascia from spinous processes of lumbar and last 7 or 8 thoracic vertebrae, last two or three ribs
I: Teres major tuberosity
A: Draw limb caudally or flex shoulder
I: Pectorales caudalis and thoracodorsalis nn.

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9
Q

Serratus ventralis

  1. Cervicis
  2. Thoracis
A

O: 1. Transverse processes of C3 - C7
2. First seven or eight ribs ventral to middle
I: Serrated face of scapula
A: Support trunk, carry shoulder forward or backward, depress scapula
I: Cervicales and thoracicales nn.

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10
Q

Supraspinatus

A

O: Supraspinous fossa and spine of scapula
I: Greater tubercle of humerus
A: Extend shoulder and stabilize the shoulder joint
I: Suprascapularis n.

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11
Q

Infraspinatus

A

O: Infraspinous fossa and spine of scapula
I: Lateral side of greater tubercle of humerus
A: Abduct shoulder, rotate humerus laterally, flex or extend the shoulder, stabilize shoulder joint
I: Suprascapularis n.

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12
Q

Triceps

  1. Long head
  2. Lateral head
  3. Medial head
  4. Accessory head
A 
O: 1. Distal caudal border of scapula and 
     infraglenoid tuberosity
    2. Tricipital line of humerus
    3. Medial humerus
    4. Proximal caudal part of neck of humerus
I: Olecranon tuber of ulna
A: Flex the shoulder or extend the elbow
I: Radial n.
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13
Q

Deltoideus

  1. Scapular part
  2. Acromial part
A 
O: 1. Spine of the scapula
    2. Acromion process of scapula
I: Deltoid tuberosity
A: Flex the shoulder
I: Axillary n.
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14
Q

Brachialis

A

O: Caudomedial humerus (brachialis groove)
I: Ulnar tuberosity
A: Flexes the elbow
I: Musculocutaneous n.

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15
Q

Biceps brachii

A

O: Supraglenoid tubercle of humerus
I: Radial and ulnar tuberosities
A: Extends the shoulder or flexes the elbow
I: Musculocutaneous n.

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16
Q

Teres major

A

O: Caudal angle of scapula
I: Teres major tuberosity of humerus
A: Flex the shoulder and draw the leg back
I: Axillary n.

17
Q

Teres minor

A

O: Caudal angle of scapula
I: Teres minor tuberosity
A: Flex the shoulder
I: Axillary n.

18
Q

Extensor carpi radialis

A

O: Lateral supracondylar crest
I: Tuberosities on dorsal surface of metacarpals II and III
A: Extend the carpus
I: Radial n

19
Q

Common digital extensor

A

O: Lateral epicondyle of humerus
I: Extensor process of P3 of digits II, III, IV, and V
A: Extend the carpus and digits
I: Radial n.

20
Q

Lateral digital extensor

A

O: Lateral collateral ligament of elbow and lateral epicondyle of humerus
I: Extensor process of P3 of digits III, IV and V
A: Extend digits III, IV, and V
I: Radial n.

21
Q

Ulnaris lateralis

A

O: Lateral epicondyle of humerus
I: Accessory carpal bone and proximal metacarpal V
A: Flex and abduct the carpus
I: Radial n.

22
Q

Flexor carpi ulnaris

  1. Ulnar head
  2. Humeral head
A 
O: 1.  Proximal end of ulna
    2. Medial epicondyle of humerus
I: Accessory carpal bone
A: Flex the forepaw
I: Ulnar n.
23
Q

Superficial digital flexor

A

O: Medial epicondyle of humerus
I: Caudal aspect of each middle phalanx
A: Flex the forepaw
I: Median n.

24
Q

Deep digital flexor

  1. Ulnar head
  2. Humeral head
  3. Radial head
A 
O: 1. Caudal border of ulna
    2. Medial epicondyle
    3. Medial border of radius
I: Flexor tubercle of P3 of all digits
A: 1. Flex carpus
    2. Extend the elbow
    3. Flex the digits
I: 1. Ulnar n. 
  2. Median n. and ulnar n.
  3. Median n.
25
Q

Abductor digiti I longus

A

O: Lies in groove between radius and ulna
I: Medial base of metacarpal I
A: Abduct and extend digit I, medially deviates forepaw
I: Radial n.

26
Q

Pronator teres

A

O: Medial condyle of humerus
I: Caudal to supinator on medial border of radius
A: Medially rotate dorsal surface of forearm
I: Ulnar n.

27
Q

Supinator teres

A

O: Lateral collateral ligament of elbow and lateral epicondyle of humerus
I: Medial border of radius
A: Medially rotate palmar surface of forearm
I: Radial n.

28
Q

Subscapularis

A

O: Subscapular fossa of scapula
I: Lesser tubercle of humerus
A: Rotates the humerus medial or lateral, stabilizes shoulder joint
I: Subscapular n.

Veterinary Anatomy (4 decks)

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