Origin/Insertion/Action
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Brachioradialis | Synergist to forearm flexion
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| Pectoralis Major | Flex upper arm
Adducts upper arm anteriorly (across chest)
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| Sternocleidomastoid | Flexes head
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| Zygomaticus | Raises lateral corners of mouth (smiling muscle)
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| Brachialis | Flexes forearm (pronated) <-- pouring soup out
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| Orbicularis Oculi | Closes eye (winking muscle)
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| Latissimus dorsi | Extends upper arm
Abducts upper arm posteriorly
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| Masseter | Prime mover of jaw closure
Elevates mandible
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| Trapezius | Raises or lowers shoulder
Extends head
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| Soleus | Plantar flexes foot
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| Orbicularis Oris | Closes lips (kissing muscle)
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| Temporalis | Closes jaw, elevates and retracts mandible
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| Palmaris longus | Weak wrist flexor, tenses skin and fascia of palm
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| Flexor carpi radialis | Flexes wrist, abducts hand
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| Extensor carpi ulnaris | Extends wrist, addicts hand
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| Flexor carpi ulnaris | Flexes wrist, addicts hand
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| Extensor digitorum longus | Dorsifilexes foot and extends toes
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| Finularis (peroneus) | Plantar flexes and everts foot
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| Tibialis anterior | Dorsiflexes and inverts foot
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| Gracilis | Adducts, flexes, medially rotates thigh, flexes knee
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| Pectoralis minor | With ribs fixed draws scapula forward and downward
With scapula fixed draws rib cage superiorly
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| External Oblique Internal Oblique Transverse Abdominis | Compresses abdominal contents
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| Serratus anterior | Prime mover to protract and hold scapula against chest wall
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| Flexor digitorum longus | Plantar flexes and inverts foot, flexes toes
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| Pronator teres | Pronates forearm
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| Levator scapulae | Elevates/ adducts scapula
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| Extensor carpi radials | Extends wrist, abducts hand
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| Extensor digitorum | Extends fingers,wrist, abducts fingers
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| Adductor Longus Adductor femorus Pectineus | Adducts, flexes and medially rotates thigh
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| Gluteus Maximus | Extend thigh
Lateral rotation
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| Gluteus Medius | Abducts and medially rotates thigh
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| Sartorius | Abducts, flexes, laterally rotates thigh, flexes knee
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| Tensor fascias latae | Flexes and abducts thigh, rotates thigh medially, stabilizes knee and trunk
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| Semitendinosus | ORIGIN- ischial tuberosity
INSERTION-tibia
ACTION- flexes knee, extends thigh
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| Biceps Femoris | ORIGIN- femur , ischium
INSERTION - tibia, fibula
ACTION - flexes knee, extends thigh
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| Gastrocnemius | ORIGIN-lateral, medial condyle
INSERTION -calcaneus
ACTION -plantar flexes foot, flex knee
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| Rectus abdominus | ORIGIN -pubic crest
INSERTION - ribs 5,6,7. Diploid process
ACTION -flex &rotate lumbar region
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| Deltoid | ORIGIN-clavicle, scapula (acromion , spine)!
INSERTION- numerous (deltoid tuberosity)
ACTION -abducts upper arm
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| Vastus lateralis Vastus medialis Vastus intermedius | ORIGIN - femur
INSERTION - tibial tuberosity
ACTION - extends knee
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| Rectus femoris | ORIGIN-llium
INSERTION - tibial tuberosity
ACTION - flex thigh, extend knee
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| Biceps brachii | ORIGIN -scapula, coracoid process
INSERTION -radial tuberosity
ACTION - flex supinated forearm (holding soup)
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| Triceps brachii | ORIGIN -scapula , humerus
INSERTION -olceranon process-ulna
ACTION -extends forearm
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| Semimembranosus | ORIGIN - ischial tuberosity
INSERTION -tibia
ACTION -flexes knee, extends thigh
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| Rotator cuff -supraspinatus -infraspinatus -teres minor -subscapularis | ORIGIN -scapula
INSERTION -humerous-greater tubercle
ACTION - rotation of humerous-stabilizes shoulder joint, assists arm movement
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