Canine Thoracic Limb Muscles Flashcards

spine of scapula
Terms Definitions
 
 
Supraspinatus
 
Origin: Supraspinous fossa; spine of scapula
 
Insertion: Greater & lesser tubercles of humerus
 
Function: Extend, stabilize shoulder
 
 
 
Infraspinatus
 
 Origin: Infraspinous fossa
 
Insertion: Greater tubercle of humerus
 
Function: Flex/extend shoulder; abduct shoulder; rotate arm laterally
 
 
Deltoideus
 
Origin: Scapular spine
 
Insertion: Deltoid tuberosity
 
Function: Flex shoulder
 
 
Teres minor
 
Origin: Infraglenoid tubercle and scapular caudal border
Insertion: Teres minor tuberosity of humerous
 
Function: Flex shoulder; rotate arm laterally
 
 
Subscapularis
 
 
Origin: Subscapular fossa
 
Insertion: Lesser tubercle of humerus
 
Function: Adduct, extend and stabilize shoulder; rotate arm medially
 
 
 
Subscapularis
 
Origin: Subscapular fossa
 
Insertion: Lesser tubercle of humerus
 
Function: Adduct, extend, stabilize shoulder
 
 
Teres major
 
 
Origin: Caudal border of scapula
 
Insertion: Teres major tuberosity of humerus
 
Function: Flex shoulder, rotate arm medially
 
 
Coracobrachialis
 
Origin: Coracoid process of scapula
 
Insertion: Lesser tubercle of humerus
 
Function: Adduct, extend, stabilize shoulder
 
 
Tensor fascia antebrachii
 
Origin: Fascia covering latissimus dorsi
 
Insertion: Olecranon
 
Function: Extend elbow
 
 
Triceps brachii
 
Long head
 
Origin: Caudal scapular border
 
Insertion: Olecranon
 
Function: Extend elbow; flex shoulder
 
 
Triceps brachii
 
Lateral head
 
Origin: Tricipital line of humerus
 
Insertion: Olecranon
 
Function: Extend elbow
 
 
Triceps bracii
 
Accessory head
 
Origin: Neck of humerus
 
Insertion: Olecranon
 
Function: Extend elbow
 
 
Triceps bracii
 
Medial head
 
Origin: Lesser tubercle
 
Insertion: Olecranon
 
Function: Extend elbow
 
 
Anconeus
 
Origin: Supracondylar crest and lateral and medial epicondyles of humerus.
 
Insertion: Lateral proximal unla
 
Function: Extend elbow
 
 
Biceps bracii
 
Origin: Supraglenoid tubercle
 
Insertion: Ulnar and radial tuberosities
 
Function: Flex elbow
 
 
Brachialis
 
Origin: Lateral humerus
 
Insertion: Ulnar and radial tuberosities
 
Function: Flex elbow
 
 
Extensor carpi radialis
 
 
Origin: Supracondylar crest of humerus I
 
nsertion: small dorsal tuberosities of metacarpals II, III
 
Function: Extend digits
 
 
Superficial pectoralis
 
(descending and transverse)
 
Origin: Caudal sternum
 
Insertion: Greater tubercle of humerus
 
Function: Adduct limb; stabilize limb when bearing weight
 
 
Deep Pectoralis
 
Origin: Ventral sternum I raphe; deep abdominal fascia near caudal sternum/xiphoid process
 
Insertion: lesser tubercle of humerus; medial brachial fascia
 
Function: Adduct limb; flex shoulder
 
 
Cleidobrachialis
Origin: Clavicle
 
Insertion: Distal cranial (?) humerus; fascial tie into axilla
 
Function: Advance limb
 
 
Cleidocephalicus
 
Origin: Clavicle
 
Insertion: Mastoid process (head and neck)
 
Function: Draw head/neck laterally
 
 
Sternocephalicus
 
 Origin: Cranial sternum/manubrium
 
Insertion: Temporal bone, nuchial crest of occipital bone
 
Function: Draw head/neck laterally
 
Sternohyoidus
 
 
Origin: Caudal sternum & 1st costal cartilage
 
Insertion: Basihyoid
 
Function: Pull tongue and larynx caudally
 
 
Sternothyroideus
 
Origin: 1st costal cartilage
 
Insertion: Caudolateral thyroid cartilage
 
Functon: Draw tongue & larynx caudally
 
 
Omotransversarius
 
Origin: Transverse wing of atlas
 
Insertion: Distal spine of scapula
 
Function: Advance limb or flex neck laterally
 
 
Trapezius
 
Origin: Median raphe of neck and supraspinous ligament (from C3 - T9)
 
Insertion: Scapular spine
 
Function: Elevate, adduct limb
 
Rhomboideus
 
(Capitis, cervicis and thoracis parts)
 
Origin: Nuchal crest of occipital bone; median raphe of neck; spinous processes of T1 - T7
 
Insertion: Dorsal border of scapula
 
Function: Elevate limb
 
Latissimus dorsi
 
 Origin: Thoracolumbar fascia of spinous processes of lumbar and the last 7-8 T-verebrae; the last 2-3 ribs
 
Insertion: Teres major tuberosity of humerus
 
Function: Digging, flex shoulder
 
Serratus ventralis cervicis
 
Serratus ventralis thoracis
 
Origin: Transverse processes of the last 5 C vertebrae and the 1st 7-8 ventral ribs
 
Insertion: Serrated face of scapula
 
Function: Serves as hammock for trunk; depress scapula
 
 
Tensor fasciae antebrachii
 
Origin: Lateral fascia of latissimus dorsi
 
Insertion: Olecranon
 
Function: Extend elbow
 
 
Triceps Brachii
 
Long Head
 
 Origin: Caudal border of scapula
 
Insertion: Olecranon tuber
 
Function: Extend elbow, flex shoulder
 
 
Triceps brachii
 
Lateral Head
 
Origin: Tricipital line of humerus
 
Insertion: Olecranon tuber
 
Function: Extend elbow
 
 
 
Triceps brachii
 
Accessory Head
 
Origin: Humeral neck
 
Insertion: Olecranon tuber
 
Function: Extend elbow
 
 
Triceps brachii
 
Medial Head
 
Origin: Lesser tubercle of humerus
 
Insertion: Olecranon
 
Extend elbow
 
 
Aconeus
 
Origin: Lateral supracondylar crest, lateral & medial epicondyles of humerus
 
Insertion: Proximal lateral ulna
 
Function: Extend elbow
 
 
 
Biceps brachii
 
 
 
Origin: Supraglenoid tubercle
 
Insertion: Ulnar & radial tuberosities
 
Function: Flex elbow, extend shoulder
 
 
 
Brachialis
 
Origin: Lateral proximal humerus
 
Insertion: Ulnar & radial tuberosities
 
Function: Flex elbow
 
 
Extensor carpi radialis
 
Origin: Lateral supracondylar crest
 
Insertion: dorsal aspects of metacarpals II & III
 
Function: Extend carpus
 
 
Common Digital extensor
 
Origin: Lateral epicondyle of humerus
 
Insertion: Extensor processes of distal phalanges of II, III, IV, V
 
Function: Extend 4 digits and carpus
 
 
 
Lateral digital extensor
 
Origin: Lateral epicondyle of humerus
 
Insertion: proximal aspect of all phalanges of III, IV and V
 
Function: Extend joints III, IV & V and carpus
 
 
Ulnaris lateralis
 
Origin: Lateral epicondyle of humerus
 
Insertion: metacarpal V and accessory carpal bone
 
Function: Abduct and flex carpus
 
 
Supinator
 
 
Origin: Lateral epicondyle of humerus
 
Insertion: Cranial proximal radius
 
Function: Supinate manus, flex elbow
 
 
Abductor pollicis longus
 
 
Origin: Lateral ulna
 
Insertion: Proximal metacarpal I
 
Function: Abduct 1st digit/pollex
 
 
Pronator teres
 
Origin: Medial epicondyle of humerus
 
Insertion: Medial border of radius
 
Function: Pronate forearm; flex elbow
 
 
Flexor carpi radialis
 
Origin: medial epicondyle of the humerus & medial border of radius
 
Insertion: Palmar side of metacarpals II & III
 
Function: Flex carpus
/ 45
Term:
Definition:
Definition:

Leave a Comment ({[ getComments().length ]})

Comments ({[ getComments().length ]})

{[comment.username]}

{[ comment.comment ]}

View All {[ getComments().length ]} Comments
Ask a homework question - tutors are online