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Muscles

Origin/Insertion/Action

MuscleAction
Brachioradialis Synergist to forearm flexion
Pectoralis Major Flex upper arm Adducts upper arm anteriorly (across chest)
Sternocleidomastoid Flexes head
Zygomaticus Raises lateral corners of mouth (smiling muscle)
Brachialis Flexes forearm (pronated) <-- pouring soup out
Orbicularis Oculi Closes eye (winking muscle)
Latissimus dorsi Extends upper arm Abducts upper arm posteriorly
Masseter Prime mover of jaw closure Elevates mandible
Trapezius Raises or lowers shoulder Extends head
Soleus Plantar flexes foot
Orbicularis Oris Closes lips (kissing muscle)
Temporalis Closes jaw, elevates and retracts mandible
Palmaris longus Weak wrist flexor, tenses skin and fascia of palm
Flexor carpi radialis Flexes wrist, abducts hand
Extensor carpi ulnaris Extends wrist, addicts hand
Flexor carpi ulnaris Flexes wrist, addicts hand
Extensor digitorum longus Dorsifilexes foot and extends toes
Finularis (peroneus) Plantar flexes and everts foot
Tibialis anterior Dorsiflexes and inverts foot
Gracilis Adducts, flexes, medially rotates thigh, flexes knee
Pectoralis minor With ribs fixed draws scapula forward and downward With scapula fixed draws rib cage superiorly
External Oblique Internal Oblique Transverse Abdominis Compresses abdominal contents
Serratus anterior Prime mover to protract and hold scapula against chest wall
Flexor digitorum longus Plantar flexes and inverts foot, flexes toes
Pronator teres Pronates forearm
Levator scapulae Elevates/ adducts scapula
Extensor carpi radials Extends wrist, abducts hand
Extensor digitorum Extends fingers,wrist, abducts fingers
Adductor Longus Adductor femorus Pectineus Adducts, flexes and medially rotates thigh
Gluteus Maximus Extend thigh Lateral rotation
Gluteus Medius Abducts and medially rotates thigh
Sartorius Abducts, flexes, laterally rotates thigh, flexes knee
Tensor fascias latae Flexes and abducts thigh, rotates thigh medially, stabilizes knee and trunk
Semitendinosus ORIGIN- ischial tuberosity INSERTION-tibia ACTION- flexes knee, extends thigh
Biceps Femoris ORIGIN- femur , ischium INSERTION - tibia, fibula ACTION - flexes knee, extends thigh
Gastrocnemius ORIGIN-lateral, medial condyle INSERTION -calcaneus ACTION -plantar flexes foot, flex knee
Rectus abdominus ORIGIN -pubic crest INSERTION - ribs 5,6,7. Diploid process ACTION -flex &rotate lumbar region
Deltoid ORIGIN-clavicle, scapula (acromion , spine)! INSERTION- numerous (deltoid tuberosity) ACTION -abducts upper arm
Vastus lateralis Vastus medialis Vastus intermedius ORIGIN - femur INSERTION - tibial tuberosity ACTION - extends knee
Rectus femoris ORIGIN-llium INSERTION - tibial tuberosity ACTION - flex thigh, extend knee
Biceps brachii ORIGIN -scapula, coracoid process INSERTION -radial tuberosity ACTION - flex supinated forearm (holding soup)
Triceps brachii ORIGIN -scapula , humerus INSERTION -olceranon process-ulna ACTION -extends forearm
Semimembranosus ORIGIN - ischial tuberosity INSERTION -tibia ACTION -flexes knee, extends thigh
Rotator cuff -supraspinatus -infraspinatus -teres minor -subscapularis ORIGIN -scapula INSERTION -humerous-greater tubercle ACTION - rotation of humerous-stabilizes shoulder joint, assists arm movement
Created by: 692318728