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30 Cards in this Set
- Front
- Back
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cutaneous trunci |
Located in connective tissue of skin. No attachment to bones. Serve to twitch the skin. Especially important in horses to twitch off flies. |
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temporal |
Origin: Parietal bone Insertion: Coronoid process of mandible Action: Closes mouth when chewing Opposing Muscle: Digastricus |
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masseter |
Origin: Zygomatic arch Insertion: Lateral side of the mandible Action: Elevates mandible to close mouth white chewing Opposing Muscle: Digastricus |
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splenius |
Origin: Spinous processes Insertion: Occipital bone and mastoid process of temporal bone Action: Extends and rotates cervical spine |
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trapezius |
Origin: Dorsal aspect of neck Insertion: Spine of scapula Action: Elevates and abducts limb Opposing Muscle: Pectoral muscles EXTRINSIC MUSCLE |
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brachiocephalicus |
Origin: Clavicular intersection Insertion: Ulna, mastoid, dorsal neck Action: Pulls limb forward, extends shoulder Opposing Muscle: Latissimus dorsi EXTRINSIC MUSCLE |
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sternocephalicus |
Origin: Sternum Insertion: Occipital bone Action: Draws head to side, depresses head and neck Opposing Muscle: Trapezius EXTRINSIC MUSCLE |
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external abdominal oblique |
Origin: Thoracolumbar fascia of last rib Insertion: Linea alba Action: Flexes vertebral column/abdominal press Runs in caudoventral direction. Most superficial abdominal muscles. |
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internal abdominal oblique |
Origin: Thoracolumbar fascia Insertion: Linea alba Action: flexes vertebral column/abdominal press Runs in cranioventral direction. Second layer of abdominal muscles after external. |
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rectus abdominis |
Origin: Sternum Insertion: Pubis Action: Abdominal press Our 6-pack. Second to last layer of abdominal muscles. |
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transverse abdominis |
Origin: Last 4 to 5 ribs/transerve processes of lumbar vertebrae Insertion: Linea alba Action: Flexes vertebral column/abdominal press Runs in dorsoventral direction. Deepest layer of abdominal muscles. |
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linea alba |
Fibrous structure that runs down the midline of the ventral aspect of an animal's body. Formed by the fusion of aponeuroses of the abdominal muscles. |
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latissimus dorsi |
Origin: Last 7 thoracic vertebrae and spinous process of lumbar vertebrae Insertion: Teres major tuberosity of humerus Action: Draws limb caudally, flexes shoulder joint Opposing Muscle: Brachiocephalicus EXTRINSIC MUSCLE |
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pectoral |
Origin: Superficial - Cranial sternum Deep - sternum Insertion: Greater tubercle of humerus Action: Adducts thoracic limb Opposing Muscle: Trapezius EXTRINSIC MUSCLE |
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deltoid |
Origin: Spine/acromion of scapula Insertion: Deltoid tuberosity of humerus Action: Flexes shoulder Opposing Muscle: Supraspinatus, brachiocephalicus, biceps brachii INTRINSIC MUSCLE |
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biceps brachii |
Origin: Supraglenoid tubercle of scapula Insertion: Ulna and radial tuberosities Action: Flexes elbow/extends shoulder Opposing Muscle: Triceps brachii |
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triceps brachii |
Origin: Caudal border of scapula/proximal border of humerus Insertion: Olecranon of ulna Action: Extends elbow/flexes shoulder Opposing Muscle: Biceps brachii |
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extensor carpi radilias |
Origin: Lateral epicondyle of humerus Insertion: Proximal aspect of second and third metacarpal bones Action: Extends carpus Opposing Muscle: Extensor carpi ulnaris, flexor carpi radialis, superficial digital flexor |
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deep digital flexor |
Origin: Medial epicondyle/proximal ulna
Insertion: Palmar aspect of distal phalanges Action: Flexes carpus and digits Opposing Muscle: Extensor carpi radialis |
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superficial gluteal muscle |
Origin: Sacrum and coccygeal vertebrae Insertion: Greater trochanter of femur Action: Abducts limb/extends hip Opposing Muscle: Quadriceps femoris EXTRINSIC MUSCLE |
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biceps femoris |
Part of hamstrings. Origin: Ischiatic tuberosity of pelvis Insertion: Patella/proximal tibia/tuber calcanei Action: Extends hip/flexes stifle/extends tarsus Opposing Muscle: Quadriceps femoris EXTRINSIC MUSCLE |
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semimembranosus |
Part of hamstrings. Origin: Ischiatic tuberosity of pelvis Insertion: Femur and tibia Action: Extends hip Opposing Muscle: Quadriceps Femoris EXTRINSIC MUSCLE |
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semitendinosus |
Part of hamstrings. Origin: Ischiatic tuberosity of pelvis Insertion: Tibia and tuber calcanei Action: Extends hip/flexes stifle/extends tarsus Opposing Muscle: Quadriceps Femoris EXTRINSIC MUSCLE |
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quadriceps femoris |
Origin: Rectus femoris on ilium; vastus lateralis, vastus medialis, and vastus intermedius on proximal femur
Insertion: Tibial tuberosity Action: Extends stifle/flexes hip Opposing Muscles: Hamstrings, gluteal muscles, gastrocnemius EXTRINSIC MUSCLE |
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gastrocnemius |
Origin: Medial/lateral supracondylar tuberosities of femur Insertion: Proximal surface of tuber calcanei Action: Extends tarsus/flexes stifle Opposing Muscle: Quadriceps femoris, cranial tibial muscle INTRINSIC MUSCLE |
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diaphragm |
Muscle that separates thoracic and lumbar cavities. Cranial portion holds lungs; caudal portion faces lumbar cavity. Muscle of inspiration. |
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external intercostal muscles |
Located between ribs. Rotate ribs upward and forward during inspiration. |
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internal intercostal muscles |
Located between ribs. Rotate ribs backward during expiration. |
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middle gluteal muscle |
Origin: Lateral ilium Insertion: Greater trochanter of femur Action: Abducts limb/extends hip Opposing Muscle: Quadriceps femoris |
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deep gluteal muscle |
Origin: Body of ilium and ischiatic spine Insertion: Cranial aspect of greater trochanter Action: Abducts and extends hip Opposing Muscle: Quadriceps femoris |
