Muscle Origins + Insertions Flashcards
Subscapularis (Rotator Cuff Anterior)
Origin: Subscapular Fossa
Insertion: Lesser Tubercle Of Humerus
Action: Extends + Medially Rotates Arm
Supraspinatus
Infraspinatus
Teres Minor
Teres Major
(Rotator Cuff Posterior)
Origin:
Supraspinatus; Supraspinous Fossa
Infraspinatus; Infrapinous Fossa
Teres Minor; Scapula
Teres Major; Scapula
Insertion: Humerus
Action: Circumduction
Deltoid
Origin: Clavicle, Acrominon + Spine Of Scapula
Insertion: Humerus, Deltoid Tuberosity
Action: Abducts Arm
Iliopsoas
Origin: T12 + Lumber Vertebrae
Insertion: Lesser Tubercle Of Femur
Action: Hip + Lumbar Flexion
Gluteus Medius
Origin: Outer Ilium
Insertion: Greater Tubercle Of Femur
Action: Abducts Thigh + Medial Rotation Of Thigh
Gluteus Maximus
Origin: ilium, Sacrum, Coccyx
Insertion: Gluteal Tuberosity Of Femur, Lateral Condyle Of Tibia
Action: Extension, Abduction, & Laterally Rotates Thigh
Brachialis
Origin: Anterior, Distal Humerus
Insertion: Coronoid Process Of Ulna
Action: Forearm Flexion
Biceps Brachii
Origin: Supraglenoid Tubercle + Corocoid Process
Insertion: Radial Tuberosity
Action: Arm Flexion
Triceps Brachii
Origin: Infraglenoid Tubercle + Humerus
Insertion: Olecranon Process + Ulna
Action: Extension Of Arm
Sternocleidomastoid
Origin: Manbrium, Sternal Head Of Clavicle
Insertion: Mastoid Process
Action: Flexion Of Neck
Rectus Femoris
Origin: Anterior Inferior iliac Spine
Insertion: Tibial Tuberosity
Action: Leg Extension
Vastus - Lateralis + Intermedius + Medialis
Origin: Greater Trochanter
Insertion: Tibial Tuberosity
Action: Leg Extension
Tibialis Anterior
Origin: Lateral Tibia
Insertion: First Metatarsal + Medial Cuneiform
Action: Dorsi-Flexion
Soleus
Origin: Posterior Tibia + Fibula
Insertion: Calcaneus
Action: Planter-Flexion
Gastrocnemius
Origin: Lateral + Medial Condyles Of Femur
Insertion: Calcenous
Action: Planter-Flexion
Adductor - Magnus, Brevis, Longus
Origin: Pubis (Magnus - Ischium)
Insertion: Linea Aspera Of Femur
Action: Lateral Rotation + Adduction Of Thigh
Biceps Femoris
Origin: Ischial Tuberosity (Long)
Linea Aspira Of Femur (Short)
Insertion: Lateral Tibia + Head Of Fibula
Action: Extension Of Thigh
Semimembranosus
Semitendinosus
Origin: Ischial Tuberosity
Insertion: Medial Tibia
Action: Thigh Extension
Trapezius
Origin: Occipital + C7 - T12
Insertion: Clavicle, Acrominon + Spine Of Scapula
Action: Extension Of Head + Abduction
Latissimus Dorsi
Origin: Ribs 10 - 12, Sacrum, ilium, T7 - T12, L1 - L5
Insertion: Intertubercular Groove Of Humerus
Action: Inferiorly Pulls Shoulder
Pectoralis Minor
Origin: Ribs 3 - 5
Insertion: Coracoid Process Of Scapula
Action: Depresses Scapula
Pectoralis Major
Origin: Clavicle, Sternum, Ribs 1 - 7
Insertion: Greater Tubercle Of Humerus
Action: Flexion + Adduction + Medial Rotation Of The Arm
