Actions Insertions Origins Flashcards
Cleidobrachialis
Origin: clavicular intersection
Insertion: distal end cranial border of the humerus
Action: advance limb, extend shoulder, draw head and neck to side
Cleidocephalicus
Pars mastoidea
Par cervicalis
Origin: clavicular intersection
Par mastoidea insertion: mastoid process of the skull
Pars cervicalis insertion: occipital bone of the skull
Action: advance limb, extend shoulder, draw head and neck to the side
Sternocephalicus
Mastoid part
Origin: sternum
Insertion: mastoid part of the skull
Action: to draw the head and neck to the side
Occipital part:
Origin: sternum
Insertion: occipital bone of the skull
Action: draw the head and neck to the side
Omotransversarius
Attachments: distal end of the spine of the scapula, transverse process of the atlas
Action: to flex the neck laterally, advance limb
Trapezius
Cervical&Thoracic
Origin: median raphe
Insertion: spine of the scapula
Action: elevate and abduct the limb
Subscapularis:
Origin: subscapular fossa
Insertion: lesser tubercle of the humerus
Action: adductor extend and stabilize the limb
Teres major
Origin: caudal angle and adjacent border of the scapula
Insertion: Teres major tuberosity
Action: flex shoulder joint
Supraspinatus
Origin: supraspinous fossa
Insertion: greater tubercle of the humerus
Action: extend of flex and stabilize the shoulder joint
Teres minor
Origin: infraglenoid tubercle
Insertion: Teres minor tuberosity
Action: Flex shoulder, rotate laterally
Infraspinatus
Origin: infraspinatus fossa
Insertion: lateral side of the greater tubercle of the humerus
Action: extend or flex joint, rotate humerus
Weight bearing: prevent medial rotation, provide lateral stability to the shoulder joint
Deltoideus
Origin: spine & acromial process of the scapula
Insertion: deltoid tuberosity
Action: flex the shoulder
Serratus Ventralis
Serratus ventralis cervicis & thoracis
Origin: transverse process of the last 5 cervical vertebrae, 1st 7 or 8 ribs ventral to their middle
Insertion: dorsomedial 3rd of the scapula (serrated face)
Action: support the trunk and depress the scapula
Latissimus Dorsi
Origin: thoraculumnar fascia, last 7/8 vertebrae
Insertion: Teres major tuberosity
Action: draw the limb caudally (digging), flex the shoulder
Rhomboideus thoracis
Origin: spines of the 1st seven thoracic vertebrae
Insertion: dorsal border of the scapula
Action: elevate the forelimb, draw the scapula against the trunk
Rhomboideus cervicis
Origin: median raphe of the neck
Insertion: dorsal border of the scapula
Action: elevate the forelimb, draw the scapula against the trunk
Rhomboideus capitis
Origin: cranial dorsal border of the scapula
Insertion: occipital bone
Action: elevate the forelimb, draw the scapula against the trunk
Coracobrachialis
Origin: coricoid process of the scapula
Insertion: crest of the lesser tubercle of the humerus, proximal to the Teres major tuberosity
Action: to adduct, extend, and stabilize the shoulder joint
Tensor fascia antebrachii
Origin: the fascia covering the lateral side of the Latissimus dorsi
Insertion: olecranon
Action: extend the elbow
Long head of the Triceps
origin: caudal border of the scapula
Insertion: olecranon
Action: extend the elbow joint, flexes the shoulder joint
Lateral head of the triceps
Origin: tricipital line of the humerus
Insertion: olecranon
Action: extend the elbow joint
Accessory head of the triceps
Origin: neck of the humerus
Insertion:olecranon
Action:extend the elbow joint
Medial head of the triceps
Origin: crest of the lesser tuberosity near Teres major tuberosity
Insertion: olecranon
Action: extend the elbow
Aconeus
Origin: lateral supracondylar crest
Insertion: lateral surface, proximal end of the ulna
Action: extend the elbow
Ulnaris lateralis
Origin: lateral epicondyle of the humerus
Insertion: lateral aspect of the proximal end of the metacarpal V and the accessory carpal bone
Action: to abduct the manus, flex the carpal joints, and support the carpus when extended to support weight
Lateral digital extensor
Origin: lateral epicondyle of the humerus
Insertion: proximal ends of the phalanges of digits (3,4,5); mainly the extensor process of the distal phalanges of these digits
Action: extend the carpal joints
Common digital extensor
Origin: lateral epicondyle of the humerus
Insertion: extensor process of the phalanges of digits (2,3,4,5)
Action: to extend the carpal joints
Extensor carpi radialis
Origin: lateral epicondyle of the humerus
Insertion: small tuberosities in the dorsal surfaces of the base of metacarpals (2,3)
Brachialis
Origin: proximal surface of humerus
Insertion: ulnar and radial tuberosities
Action: flex elbow
Biceps Brachii
Origin: supraglenoid tubercle
Insertion: ulnar and radial tuberosities
Action: flex elbow, extend the shoulder
Supinator
Origin: lateral epicondyle of the humerus
Insertion: cranial surface of the proximal 4th of the radius
Action: rotate the forearm laterally so that the palmar side of the paw faces medially , to flex the elbow joint
Long abductor of digit 1
Origin: lateral border, and cranial surface of the body of the ulna, interosseous membrane
Insertion: proximal end of metacarpal 1
Action: to abduct the 1st digit, and extend the carpal joints
Pronation Teres
Origin: medial epicondyle of the humerus
Insertion: medial border of radius between the proximal and middle thirds
Action: rotate the forearm medially so that the palmar side of the paw faces the ground, flex the elbow
Flexor carpi radialis
Origin: medial epicondyle of the humerus, medial border of the radius
Insertion: the palmar side of the base of metacarpals 2,3
Action: flex the carpal joints
Superficial digital flexor
Origin: medial epicondyle of the humerus
Insertion: palmar surface of the proximal end of the middle phalanges of digits 2-5
Action: flex the carpal, metacarpalphalangeal, and the proximal interphalangeal joints of digits 2-5
Deep digital flexor (3 parts)
Humeral head: origin: medial epicondyle of humerus
Ulnar head: origin: proximal 3/4 of the caudal border of the ulna
Radial head: origin: middle third of the medial border of the radius
Insertion: flexor tubercle on the palmar surface of the distal phalanx of each digit
Action: flex the carpal and metacarpophalangeal joints, and the proximal and distal interphalangeal joints of the digits
Pronator quadratus
Attachments: applied surfaces of the radius and ulna
Action: to probate the paw
Proximal sesamoid bones
Location: palmar aspect of each metacarpophalangeal joint, in tendon of interosseous muscle
Dorsal sesamoid bones
Location: dorsal side of each metacarpophalangeal joint, embedded in tendon of common digital extensor muscle
Flexor Retinaculum
Palmar side of proximal phalanges
Extensor retinaculum
Dorsal side of the carpals
Deep antebrachial fascia
Covering the body, dryer sheet like
Flexor maniac
Sleeve from the SDF for the DDF to go through and cross over top of it, located on the middle to distal phalanges area
Palmar annular ligament
Crosses the flexor manica
Superficial cervical lymph node
Pre-scapular lymph node
