Muscles Flashcards
Biceps brachii origin
Supraglenoid tubercle
Biceps brachii insertion
Ulnar and radial tuberosities
Biceps brachii innervation
Musculocutaneous
Biceps brachii action
Flex elbow and extend shoulder
Triceps brachii origin
Long: caudal border of scapula
Lateral: tricipital line of humerus
Medial: crest of lesser tubercle
Accessory: neck of humerus
Triceps brachii insertion
Olecranon tuber
Triceps brachii innervation
Radial
Triceps brachii action
Long: flex shoulder and extend elbow
Lat/Med/Acc: extend elbow
Deltoideus origin
Spinous Head: spine of scapula
Acromial Head: acromial process
Deltoideus insertion
Deltoid tuberosity
Deltoideus Nerve
Axillary
Deltoideus action
Flex the shoulder
Pectorals origin
Superficial (descending and transverse): first two sternebrae
Deep (ascending): ventral sternum
Pectorals insertion
Superficial: crest of the greater tubercle
Deep: lesser tubercle and crest of the greater tubercle
Pectorals Nerve
Superficial: cranial pectoral
Deep: caudal pectoral
Pectorals action
Superficial: adduct Limb, prevent abduction when weight bearing
Deep: when supporting weight- pull trunk cranially and extend the shoulder, when not supporting weight- draw Limb caudally and flex shoulder, adduct limb
Quadriceps femoris origin
Rectus femoris: ilium, cranial to the acetabulum
Vastus intermedius: lateral side of the proximal end of femur
Vastus lateralis: proximal lateral part of caudal rough surface of femur
Vastus medialis: medial side of proximal end of the cranial surface and the proximal medial part of caudal rough surface of the femur
Quadriceps femoris insertion
Tibial tuberosity
Quadriceps femoris nerve
Femoral