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36 Cards in this Set
- Front
- Back
Biceps Brachii- Origin |
short head; coracoid process; long head; supraglenoid cavity; lateral head- posterior humerus; medial head-distal radial groove on posterior humerus; |
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Biceps Brachii- Insertion |
radial tuberosity |
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Biceps Brachii- Action |
flexion of elbow and supination of forearm; weak arm flexor |
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Pectoralis Major- Origin |
clavicle, sternum, cartilage of ribs 1-6, and aponeurosis of external oblique muscle; |
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Pectoralis Major- Insertion |
fibers converge by short tendon into intertubercular sulcus of humerus |
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Pectoralis Major- action |
prime mover of arm flexion ; adducts, medially rotates arms; |
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Rectus abdominis- origin |
pubic crest and symphysis |
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Rectus abdominis- insertion |
xiphoid process and costal cartilage of ribs 5-7 |
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Rectus abdominis- action |
flexes and rotates vertebral column |
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trapezius- origin |
occipital bone; ligamentum nuchae; spines of C7 and all thoracic vertebrae |
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trapezius- insertion |
acromion and spinous process of scapula; lateral third of clavicle |
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trapezius- action |
stabilizes, raises, rotates, and retracts scapula |
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levator scapulae- origin |
transverse processes of C1-C4 |
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levator scapulae- insertion |
medial border of scapula superior to spine |
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levator scapulae- action |
elevates and adducts scapula |
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origin |
the stationary, immovable or less movable attachment |
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insertion |
the moveable attachment |
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agonist/prime movers |
muscles that are primarily responsible for producing a particular movement |
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antagonist |
muscles that oppose or reverse a movement |
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synergist |
reduces undesirable or unnecessary movement to help the action of agonists |
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fixator |
fixation muscles that immobilize the origin of a prime mover so that all tension is exerted at the insertion |
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adductor longus- origin |
pubis near pubic symphasis; |
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adductor longus- insertion |
linea aspera |
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adductor longus- action |
adduct and medially rotate and flex thigh |
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vastus lateralis- origin |
greater trochanter, intertrochanteric line, and linera aspera; |
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vastus lateralis- insertion |
tibial tuberosity and patella |
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vastus lateralis- action |
extends and stabilizes knee |
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gluteus maximus- origin |
dorsal ilium, sacrum, and coccyx |
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gluteus maximus- insertion |
gluteal tuberosity of femur and iliotibial tract |
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gluteus maximus- action |
major extensor of thigh; |
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biceps femoris-origin |
ischial tuberosity (long head) ; linea aspera and distal femur (short head); |
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biceps femoris- insertion |
tendon passes laterally to insert into head of fibula and lateral condyle of tibia |
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biceps femoris- action |
extends thigh and flexes knee |
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gastrocnemius- origin |
by two heads from medial and lateral condyles of femur |
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gastrocnemius- insertion |
calcaneus via calcaneal tendon |
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gastrocnemius- action |
plantar flexes foot when knee is extejded; crosses knee joint; thus can flex knee (when foot is dorsiflexed) |