Muscle O I A
Terms
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- Sternocleidomastoid
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O = Sternum and Clavicle
I = Mastoid process of temporal bone
A = Flexes neck - Pectoralis Major
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O = Clavicle and Sternum
I = Intertubercular sulcus of humerus
A = Flexes, Adducts, and Medially rotates humerus - Pectoralis Minor
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O = Ribs 3-5
I = Coracoid process of scapula
A = Depresses and Protracts scapula - Scalenes: Anterior, Middle, Posterior
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O = Transverse processes of cervical vertebrae
I = First and Second Ribs
A = Flex and Rotate neck; Assist in inspiration - Internal and External Intercostals
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O = Lower border of rib
I = Upper border of next rib
A = Elevates ribs for inspiration - Latissimus Dorsi
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O = By aponeurosis from thoracic, lumbar, and sacral spinous processes
I = Intertubercular sulcus of humerus
A = Extends, Adducts, and Medially rotates humerus - Trapezius
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O = Occipital bone, cervical and thoratic vertebrae
I = Clavicle and Spine of scapula to acromion
A = Elevates clavicle; Adducts, elevates and depresses scapula; extends head - Levator Scapulae
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O = Spines of C1-C4 vertebrae
I = Superior vertebral border of scapula
A = Elevates scapula - Rhomboids (Major and Minor)
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O = C7-T5 thoracic spinous process
I = Vertebral border of scapula
A = Elevates and adducts scapula and rotates it downward; stabilizes scapula - Serratus Anterior
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O = Upper 8 ribs
I = Vertebral border and inferior angle of scapula
A = Rotates scapula - Teres Major
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O = Inferior angle and axillary border of scapula
I = Intertubercular sulcus of humerus
A = Extends and medially rotates humerus - Supraspinatus
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O = Supraspinous fossa
I = Greater tubercle of humerus
A = Abducts humerus - Infraspinatus
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O = Infraspinous fossa
I = Greater tubercle of humerus
A = Adducts and laterally rotates humerus - Teres Minor
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O = Inferior axillary border of scapula
I = Greater tubercle of humerus
A = Extends and laterally rotates humerus - Subscapularis
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O = Subscapular fossa
I = Lesser tubercle of humerus
A = Medially rotates humerus - Deltoid
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O = Acromion and spine of scapula and acromial end of clavicle
I = Deltoid tuberosity of humerus
A = Abducts, flexes, extends, and medially and laterally rotates humerus - Coracobrachialis
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O = Coracoid process of scapula
I = Medial surface of humerus
A = Flexes and adducts humerus - Biceps Brachii
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O = Coracoid process and supraglenoid tubercle
I = Radial tuberosity
A = Flexes arm; flexes and supinates forearm - Brachialis
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O = Distal, anterior surface of humerus
I = Coronoid process of ulna
A = Flexes forearm - Triceps, 3 Heads: Long, Lateral, Medial
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O = Infraglenoid tubercle of scapula; lateral and posterior surface of humerus
I = Olecranon process of ulna
A = Extends arm and forearm - External Oblique
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O = Lower eight ribs
I = Linea alba and iliac crest
A = Compresses abdomen - Internal Oblique
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O = Iliac Crest
I = Linea Alba
A = Compresses abdomen - Transversus Abdominis
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O = Lower 6 ribs and iliac crest
I = Linea Alba
A = Compresses abdomen - Rectus Abdominis
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O = Pubic symphysis
I = Costal cartilage
A = Compresses abdomen and flexes vertebral column - Gluteus Maximus
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O = Iliac Crest
I = Iliotibial tract of fascia lata
A = Extends and laterally rotates femur - Gluteus Medius
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O = Ilium
I = Greater trochanter of femur
A = Abducts and medially rotates femur - Internal Rotators
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O = Ilium, Ischium, and pubis
I = Greater trochanter of femur
A = Laterally rotates femur - Psoas Major
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O = Transverse processes and bodies of lumbar vertebrae
I = Lesses trochanter of femur
A = Flexes vertebral column; flexes and laterally rotates femur - Iliacus
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O = Iliac fossa
I = Tendon of psoas major
A = Flexes and laterally rotates femur - Tensor Fascia Lata
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O = Iliac crest
I = Tibia via iliotibial tract
A = Flexes and abducts femur - Sartorius
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O = Anterior superior iliac spine
I = Medial surface of body of tibia
A = Flexes leg; flexes and laterally rotates thigh (thus crossing leg) - Rectus Femoris
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O = Anterior inferior iliac spine
I = Base of patella
A = Flexes thigh; extends leg - Vastus Group: Lateralis, Medialis, Intermedius
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O = Femur
I =Tibial tuberosity via patellar ligament
A = Extends leg - Gracilis
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O = Pubic symphysis and pubic arch
I = Medial surface of body of tibia
A = Adducts thigh; flexes leg - Adductor Longus
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O = Pubic symphysis and pubic crest
I = Linea Aspera of femur
A = Adducts, flexes, and medially rotates thigh - Pectineus
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O = Superior ramus of pubis
I = Pectineal line of femur
A = Flexes and adducts thigh - Adductor Magnus
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O = Inferior ramus of pubis and ischial tuberosity
I = Linea aspera of femur
A = Adducts, flexes, extends and medially rotates thigh - Biceps Femoris
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O = Ischial tuberosity and linea aspera of femur
I = Head of fibula; tibia
A = Flexes leg; extends thigh - Semimembranosus
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O = Ischial tuberosity
I = Medial condyle of tibia
A = Flexes leg; extends thigh - Semitendinosus
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O = Ischial tuberosity
I = Medial surface of tibia
A = Flexes leg; extends thigh - Gastrocnemius
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O = Medial and lateral condyles of femur
I = Calcaneous via achilles tendon
A = Flexes leg; plantar flexes foot - Soleus
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O = Tibia and Fibula
I = Calcaneus via achilles tendon
A = Plantar flexes foot