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Veterinary Anatomy > Practical 1 > Flashcards

Practical 1 Flashcards

Name the origin, termination, and action of each muscle.

1
Q

Superficial Pectoral- (descending and transverse pectoral)

A

Origin: sternum
Termination: crest of greater tubercle and cranial humeral border
Action: adduct the thoracic limb

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2
Q

Deep (ascending) pectoral

A

Origin: sternum.
Termination: greater and lesser tubercles of humerus.
Action: adduct thoracic limb and pull it caudally.

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3
Q

Brachiocephalicus

A

Origin: clavicular intersection.
Termination:
cleidobrachialis: distal cranial humerus
cleidocephalicus:
mastoid part: mastoid process of temporal bone
cervical part: dorsal midline of neck
Action: pull thoracic limb cranially (and/or) depress and pull head and neck laterally

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4
Q

Omotransversarius

A

Origin: wing of the atlas
Termination: distal spine of the scapula
Action: pull thoracic limb cranially (and/or) depress and pull head and neck laterally

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5
Q

Trapezius

A 
Origin:
cervical part:  dorsal neck
thoracic part:  dorsal thorax
Termination:  spine of the scapula
Action:  elevate the thoracic limb
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6
Q

Rhomboideus

A 
Origin:
rhomboideus thoracis:  dorsal thorax
rhomboideus cervicis:  dorsal neck
rhomboideus capitis:  occipital bone
Termination:  dorsal border of scapula and/or scapular cartilage
Action:  elevate the thoracic limb
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7
Q

Serratus ventralis

A

Origin:
serratus ventralis cervicis: cervical vertebrae
serratus ventralis thoracis: thoracic wall (ribs)
Termination: serrated face of scapula
Action: support and/or elevate the trunk

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8
Q

Latissimus dorsi

A

Origin: thoracolumbar fascia
Termination: teres major tuberosity
Action: draw the thoracic limb caudally, flex or extend the humeral joint

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9
Q

Sternocephalicus

A

Origin: sternum
Termination:
mastoid part: mastoid process of temporal bone
occipital part: occipital bone
Action: depress head and neck; draw head and neck laterally

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10
Q

Sternohyoideus

A

Origin: sternum
Termination: basihyoid bone
Action: pull tongue and larynx caudally

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11
Q

Sternothyroideus

A

Origin: cranial aspect of sternum or ribcage
Termination: thyroid cartilage
Action: pull tongue and larynx caudally

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12
Q

Deltoideus

A

Origin: spine of scapula and acromion
Termination: deltoid tuberosity of humerus
Action: flex the humeral joint

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13
Q

Supraspinatus

A

Origin: supraspinous fossa of the scapula
Termination: greater tubercle of the humerus
Action: extend the humeral joint

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14
Q

Infraspinatus

A

Origin: infraspinous fossa of the scapula
Termination: greater tubercle of the humerus
Action: flex the humeral joint; abduct the limb at the humeral joint

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15
Q

Teres minor

A

Origin: caudal border of scapula
Termination: teres minor tuberosity of the humerus
Action: flex the humeral joint

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16
Q

Subscapularis

A

Origin: subscapular fossa of scapula
Termination: lesser tubercle of humerus
Action: adduct limb at humeral joint

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17
Q

Teres major

A

Origin: caudal border of scapula
Termination: teres major tuberosity of humerus
Action: flex the humeral joint

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18
Q

Coracobrachialis

A

Origin: coracoid process of scapula
Termination: crest of the lesser tubercle of the humerus
Action: adduct limb at shoulder

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19
Q

Biceps brachii

A

Origin: supraglenoid tubercle
Termination: radial and ulnar tuberosities
Action: flex the cubital joint and extend the humeral joint

20
Q

Brachialis

A

Origin: brachial groove of humerus
Termination: proximal radius and/or ulna
Action: flex the cubital joint

21
Q

Triceps brachii

A

Origin: caudal border of scapula (long head); proximal humerus (other heads)
Termination: tuber olecrani
Action: extend the cubital joint (all heads); flex the humeral joint (long head)

22
Q

Tensor fasciae antebrachii

A

Origin: latissimus dorsi and fascia on caudal border of scapula
Termination: tuber olecrani
Action: extend the cubital joint (and tense the deep antebrachial fascia)

23
Q

Anconeus

A

Origin: caudal aspect of the distal humerus
Termination: tuber olecrani
Action: extend the cubital joint

24
Q

Extensor carpi radialis

A

Origin: lateral epicondyle of the humerus (and its crest)
Termination: dorsal base of second and third metacarpal bones
Action: extend the carpal joints and flex the cubital joint

25
Q

Common digital extensor

A

Origin: lateral epicondyle of the humerus
Termination: extensor processes of the distal phalanges
Action: extend the carpal and digital joints

26
Q

Lateral digital extensor

A

Origin: lateral epicondyle of the humerus
Termination: distal phalanges (also the proximal and/or middle phalanges) of
lateral digit(s)
Action: extend the carpal joints and the digital joints of the lateral most digits

27
Q

Ulnaris lateralis

A

Origin: lateral epicondyle of the humerus
Termination: accessory carpal bone and lateral base of fifth metacarpal bone
Action: flex the carpal joints; abduct the manus

28
Q

Supinator

A

Origin: lateral epicondyle of the humerus
Termination: body of radius
Action: supination of the manus

29
Q

Abductor pollicis longus

A

Origin: proximal antebrachium (ulna)
Termination: medial metacarpus
Action: abduct the first digit

30
Q

Brachioradialis

A

Origin: lateral epicondyle of the humerus
Termination: fascia near the carpus
Action: flexes the cubital joint and supinates the manus

31
Q

Flexor carpi radialis

A

Origin: medial epicondyle of the humerus
Termination: palmar base of metacarpal bones 2 and 3
Action: flex the carpal joints

32
Q

Flexor carpi ulnaris

A

Origin: medial epicondyle and olecranon
Termination: accessory carpal bone
Action: flex the carpal joints

33
Q

Superficial digital flexor

A

Origin: medial epicondyle of the humerus
Termination: middle phalanges of the digits (palmar aspects)
Action: flex the carpal joints, meatacarpophalangeal and proximal interphalangeal joints

34
Q

Deep digital flexor

A

Origin: humerus (medial epicondyle), radius, ulna. (The radial head may be absent in eq.)
Termination: flexor tubercles of distal phalanges
Action: flex the carpal and digital joints

35
Q

Pronator teres

A

Origin: medial epicondyle of the humerus
Termination: medial body of radius
Action: weak elbow flexion and weak pronation of the manus

36
Q

Pronator quadratus

A

Attachments: apposed surfaces of the radius and the ulna
Action: pronation of the manus

37
Q

Muscles of the Manus

A

Interosseous muscles

38
Q

Extrinsic Muscles of the Thoracic Limb (8)

A 
Superficial  pectoral  
Deep  (ascending)  
Brachiocephalicus
Omotransversarius
Trapezius
Rhomboideus
Serratus  ventralis
Latissimus  dorsi
39
Q

Muscles of Ventral Neck (3)

A

Sternocephalicus
Sternohyoideus
Sternothyroideus

40
Q

Intrinsic Muscles of the Thoracic Limb

Lateral Muscles of the Shoulder) (4

A

Deltoideus
Supraspinatus
Infraspinatus
Teres minor

41
Q

Intrinsic Muscles of the Thoracic Limb

Medial Muscles of the Shoulder) (3

A

Subscapularis
Teres major
Coracobrachialis

42
Q

Intrinsic Muscles of the Thoracic Limb

Cranial Muscles of the Brachium) (2

A

Biceps brachii

Brachialis

43
Q

Intrinsic Muscles of the Thoracic Limb

Caudal Muscles of the Brachium) (3

A

Triceps brachii
Tensor fasciae antebrachii
Anconeus

44
Q

Intrinsic Muscles of the Thoracic Limb

Craniolateral Antebrachial Muscles) (7

A 
Extensor  carpi  radialis  
Common  digital  extensor  
Lateral  digital  extensor  
Ulnaris  lateralis 
Supinator 
Abductor  pollicis longus 
Brachioradialis
45
Q

Intrinsic Muscles of the Thoracic Limb

Caudomedial Antebrachial Muscles) (6

A 
Flexor  carpi  radialis  
Flexor  carpi  ulnaris  
Superficial  digital  flexor  
Deep  digital  flexor  
Pronator  teres  
Pronator  quadratus

Veterinary Anatomy (1 decks)

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