Origins and Insertions of Muscles Flashcards
Trapezius (O,I)
O: Occipital Bone (superior nuchal line): ligamentum nuchae; spinous processes of C7-T12
I: Clavicle- acromion process and spine of scapulae
Latissimus dorsi (O, I)
O: Spinous processes of T7-T12; ribs 8-12; Iliac crest; thoracolumbar fascia
I: Intertubercular sulcus of humerus
Deltoid (O, I)
O: Acromial end of clavicle; acromion and spine of scapula
I: Deltoid tuberosity of humerus
Pectoralis Major (O, I)
O: Medical clavicle; costal cartilages of ribs 2-6; the body of sternum
I: Lateral part of intertubercular sulcus of humerus
Biceps Brachii (O, I)
O: Long head; supraglenoid tubercle of scapula
Short head: The coracoid process of scapula
I: Radial tuberosity and bicipital aponeurosis
Psoas Major (O, I)
O: Transverse processes and bodies of T12-L5 vertebrae
I: Lesser trochanter of femur with iliacus
Iliacus (O, I)
O: Iliac fossa
I: Lesser trochanter of femur with psoas major
Gluteus Maximus (O, I)
O: Iliac crest, sacrum, coccyx
I: Iliotibial tract of fascia lata; linea aspera and gluteal tuberosity of femur
Rectus Femoris (O, I)
O: Anterior inferior iliac spine
I: Quadriceps tendon to the patella and then patellar ligament to the tibial tuberosity
Tibialis anterior (O, I)
O: Lateral condyle and proximal shaft of tibia; interosseous membrane
I: Metatarsal 1 and first (medial) cuneiform
Gastrocnemius (O, I)
O: Superior posterior surfaces of lateral and medial condyles of the femur
I: Calcaneus (via calcaneal tendon)
Frontal Belly of Occipitofrontalis (O, I)
O: Epicranial aponeurosis
I: Skin over supraorbital margin (eyebrow skin)
Orbicularis Oculi(O, I)
O: Medial wall or margin of the orbit
I: Skin surrounding eyelids
Depressor Anguli Oris (O, I)
O: Body of mandible
I: Skin at inferior corner (angle) of mouth
Zygomaticus Major (O, I)
O: Zygomatic bone
I: Skin at superolateral edge of mouth
