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35 Cards in this Set
- Front
- Back
Superficial pectoral m.'s
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Action: To adduct the limb when it is not bearing weight; to prevent the limb from being abducted when weight bearing
Innervation: Cranial pectoral nerves (C7, C8) |
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Deep pectoral m.
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Action: When the limb is advanced and fixed, to pull the trunk cranially and to extend the shoulder joint. When the limb in not weight bearing, to draw the limb caudally and flex the shoulder joint. To adduct the limb.
Innervation: Caudal pectoral nerves (C8, T1) |
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Brachiocephalicus m.
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Action: To advance the limb; to extend the shoulder joint and draw the neck and head to the side
Innervation: Accessory nerve and ventral branches of cervical spinal nerves |
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Sternocephalicus m.
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Action: To draw the head and neck to the side
Innervation: Accessory nerve and ventral branches of cervical spinal nerves |
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Sternohyoideus m.
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Action: To pull the tongue and larynx caudally
Innervation: Ventral branches of cervical spinal nerves |
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Sternothyroideus m.
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Action: To draw the tongue and larynx caudally
Innervation: Ventral branches of cervical spinal nerves |
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Omotransversarius m.
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Action: To advance the limb or flex the neck laterally
Innervation: Accessory nerve |
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Trapezius m.
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Action: To elevate and abduct the forelimb
Innervation: Accessory nerve |
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Rhomboideus m.
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Action: To elevate the forelimb and draw the scapula against the trunk
Innervation: Ventral branches of cervical and thoracic spinal nerves |
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Latissimus dorsi m.
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Action: To draw the free limb caudally as in digging; to flex the shoulder joint
Innervation: Thoracodorsal nerve (C7, C8, T1) |
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Serratus ventralis cervicis and thoracis m.'s
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Action: To support the trunk and depress the scapula
Innervation: Ventral branches of cervical spinal nerves and the long thoracic nerve (C7) |
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Deltoideus m.
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Action: To flex the shoulder
Innervation: Axillary nerve |
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Infraspinatus m.
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Action: To extend or flex the joint, depending on the degree of extension or position of the joint when the muscle contracts. To abduct the shoulder and to rotate the shoulder laterally. To prevent medial rotation when weight bearing and provide stability to the shoulder joint.
Innervation: Suprascapular nerve |
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Supraspinatus m.
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Action: To extend and stabilize the shoulder joint
Innervation: Suprascapular nerve |
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Subscapularis m.
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Action: To adduct, extend, and medially stabilize the shoulder joint. To rotate the shoulder medially and prevent lateral rotation when bearing weight.
Innervation: Subscapular nerve |
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Teres major m.
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Action: Flex the shoulder, rotate the shoulder medially, and prevent lateral rotation when weight bearing.
Innervation: Axillary nerve |
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Tensor fasciae antebrachii m.
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Action: To extend the elbow
Innervation: Radial nerve |
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Long head of the triceps brachii m.
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Action: To extend the elbow and flex the shoulder
Innervation: Radial nerve |
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Lateral head of the triceps brachii m.
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Action: To extend the elbow
Innervation: Radial nerve |
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Accessory head of the triceps brachii m.
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Action: to extend the elbow
Innervation: Radial nerve |
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Medial head of the triceps brachii m.
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Action: To extend the elbow
Innervation: Radial nerve |
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Anconeus m.
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Action: To extend the elbow
Innervation: Radial nerve |
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Biceps brachii m.
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Action: To flex the elbow and extend the shoulder
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Brachialis m.
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Action: To flex the elbow
Innervation: Musculocutaneous nerve |
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Extensor carpi radialus m.
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Action: To extend the carpus
Innervation: Radial nerve |
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Common digital extensor m.
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Action: To extend the joints of the 4 principal digits and the carpus
Innervation: Radial nerve |
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Lateral digital extensor m.
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Action: To extend the carpus and joints of digits III, IV, and V
Innervation: Radial nerve |
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Ulnaris lateralis m.
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Action: To abduct the carpal joint and support the carpus when extended to support weight
Innervation: Radial nerve |
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Supinator m.
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Action: To rotate the forearm laterally so that the palmar side of the paw faces medially (supination); to flex the elbow
Innervation: radial nerve |
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Pronator teres m.
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Action: To rotate the forearm medially so that the palmar side of the paw faces the ground (pronation); to flex the elbow
Innervation: Median nerve |
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Flexor carpi radialis m.
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Action: To flex the carpus
Innervation: Median nerve |
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Superficial digital flexor m.
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Action: To flex the carpal, metacarpophalangeal, and proximal interphalangeal joints of digits II, III, IV, and V
Innervation: Median nerve |
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Flexor carpi ulnaris m.
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Action: to flex the carpus
Innervation: Ulnar nerve |
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Deep digital flexor m.
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Action: To flex the carpal and metacarpophalangeal joints and the proximal and distal interphalangeal joints of the digits
Innervation: Median and ulnar nerves |
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Pronator quadratus m.
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Action: To pronate the paw
Innervation: Median nerve |