muscles!!!!!!!!!!!!!!
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Sternocleidomastoid (O,I,A,N) | O: manubrium of sternum and medial portion of clavicle
I: mastoid process of temporal bone
A: Bi(cervical flexion) u(rotates head towards shoulder on opposite side with face tilted upward)
N: accessory nerve
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| Transeversus Abdominis (A,N) | A: compresses abdominal contents
N: intercostal nerves (T7-12), L1
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| Internal Intercostals (A,N) | A: aid in force expiration
N: intercostal nerves
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| Scalenes (A,N) | A: elevates ribs 1,2, flex and rotate neck
N: cervical spinal nerves
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| Erector Spinae (A,N) | A: extends vertebral column
N: spinal nerves
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| Diaphragm (A,N) | A: prime mover of inspiration
N: phrenic nerve
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| Rectus Abdominis (O,I,A,N) | O: pubic crest and symphysis
I: xiphoid process and costal cartilage of ribs 5-7
A: flex and rotate lumbar spine, stabilizes pelvis during walking
N: intercostal nerves (T6, T7-12)
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| Temporalis (O,I,A,N) | O: temporal fossa
I: coronoid process of mandible
A: elevates and retracts mandible
N: trigeminal nerve
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| Platysma (A,N) | A: tenses skin of neck, depresses mandible
N: facial nerve
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| Risorius (A,N) | A: draws corners of lips laterally
N: facial nerve
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| Semispinalis (A,N) | A: extends vertebral column, rotates to opposite side
N: spinal nerves
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| Serrateus Anterior (A,N) | A: protracts shoulder girdle
N: long thoracic nerve
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| Pectoralis Minor (A,N) | A: draws rib cage superiorly
N: medial and lateral pectoral nerves
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| Zygomaticus (minor, major) (A,N) | A: smiling
N: facial nerve
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| Mentalis (A,N) | A: protrudes lower lip, wrinkles chin
N: facial nerve
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| Orbicularis Oris (A,N) | A: pursues and protrudes lips
N: facial nerve
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| Occipital Belly (occipitalis) (O,I,A,N) | O: occipital and temporal bones
I: galea aponeurotica
A: pulls scalp posteriorly
N: facial nerve
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| Buccinator (A,N) | A: draws corners of lips laterally, holds food between teeth during chewing
N: facial nerve
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| Masseter (O,I,A,N) | O: zygomatic arch and maxilla
I: angle and ramus of mandible
A: prime mover of jaw closure, elevates mandible
N: trigeminal nerve
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| Orbicularis Oculi (A,N) | A: blinking, squinting
N: facial nerve
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| Frontal Belly (Frontalis) (O,I,A,N) | O: galea aponeurotica
I: skin of eyebrows, root of nose
A: raises eyebrows, wrinkles forehead skin horizontally
N: facial nerve
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| Subclavius (A) | A: stabilize and depress pectoral girdle
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| Quadratus Lumborum (A,N) | A: uni (lateral flexion) bi (extension of lumbar spine - forced inspiration)
N: T12 and upper lumbar nerves
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| External Oblique (A,N) | A: bi- trunk flexion, rotation, lateral flexion
N: intercostal nerves (T7-12)
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| Internal Oblique (A,N) | A: bi- trunk flexion, rotation, lateral flexion
N: intercostal nerves (T7-12), L1
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| External Intercostals (A,N) | A: aid in inspiration
N: intercostal nerves
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| Pectoralis Major (O,I,A,N) | O: clavicle, sternum, cartilage of ribs 1-7, external oblique
I: greater tubercle of humerus
A: prime mover of shoulder flex, med rot, add
N: lateral and medial pectoral nerves
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| Subscapularis (O,I,A,N) | O: subscapular fossa of scapula
I: lesser tubercle of humerus
A: shoulder med rot
N: subscapular nerves
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| Teres Minor (O,I,A,N) | O: lateral border of dorsal scapular surface
I: greater tubercle of humerus inferior to infraspinatus
A: lat rot of shoulder
N: axillary nerve
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| Infraspinatus (O,I,A,N) | O: infraspinous fossa
I: greater tubercle of humerus posterior to insertion of supraspinatus
A: shoulder lat rot
N: suprascapular nerve
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| Levator Scapulae (O,I,A,N) | O: transverse process of C1-C4
I: medial border of scapula
A: elevates, adducts scapula
N: cervical spinal nerves, dorsal scapular nerve
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| Trapezius (A,N) | A: shrug (elevate) shoulders and extend head
N: accessory nerve
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| Rhomboids (O,I,A,N) | O: spinous process of C7-T5
I: medial border of scapula
A: retraction of scapula (squaring shoulders)
N: dorsal scapular nerve
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| Supraspinatus (O,I,A,N) | O: supraspinous fossa
I: superior part of greater tubercle of humerus
A: prevents inferior dislocation of humerus
N: suprascapular nerve
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| Latissimus Dorsi (O,I,A,N) | O: lumbodorsal fascia into T6-L5, lower 4 ribs, iliac crest
I: intertubercular sulcus of humerus
A: prime mover of shoulder ext, add, med rot
N: thoracodorsal nerve
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| Deltoid (I,A,N) | I: deltoid tuberosity
A: prime mover of shoulder add (fibers), flex, ext, med and lat rot
N: axillary nerve
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| Teres Major (O,I,A,N) | O: posterior of inferior angle of scapula
I: intertubercular sulcus of humerus
A: ext, med rot, add of shoulder
N: lower subscapular nerve
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| Anconeus (A,N) | A: elbow ext
N: radial nerve
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| Triceps brachii (I,A,N) | I: olecranon process
A: elbow ext
N: radial nerve
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| Brachialis (I,A,N) | I: coronoid process of ulna
A: elbow flex
N: musculocutaneous nerve
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| Biceps brachii (I,A,N) | I: radial tuberosity
A: elbow flex, forearm supination
N: musculocutaneous nerve
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| Coracobrachialis (O,I,A,N) | O: coracoid process of scapula
I: medial surface of humerus shaft
A: shoulder flex, add
N: musculocutaneous nerve
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| Brachioradialis (O,I,A,N) | O: lateral supracondylar ridge of distal humerus
I: styloid process of radius
A: elbow flexion
N: radial nerve
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| Pronator Teres (A,N) | A: pronates forearm
N: median nerve
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| Flexor Carpi Radialis (A,N) | A: wrist flex, abd
N: median nerve
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| Palmaris Longus (A,N) | A: wrist flex
N: median nerve
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| Flexor Carpi Ulnaris (A,N) | A: wrist flex, add
N: ulnar nerve
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| Flexor Digitorum Superficialis (A,N) | A: flex wrist, fingers 2-5
N: median nerve
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| Flexor pollicis longus (A,N) | A: flexes thumb
N: median nerve
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| Flexor digitorum profundus (A,N) | A: flexes wrist, all fingers
N: ulnar, median nerves
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| Pronator Quadratus (A,N) | A: prime mover forearm pronation
N: median nerve
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| Extensor Carpi Radialis Longus (A,N) | A: extends wrist, adb
N: radial nerve
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| Extensor Carpi Radialis Brevis (A,N) | A: extends wrist, abd
N: radial nerve
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| Extensor Digitorum (A,N) | A: prime mover ext fingers, wrist
N: radial nerve
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| Extensor Carpi Ulnaris (A,N) | A: extends wrist, add
N: posterior interosseous nerve
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| Supinator (A,N) | A: supinates forearm
N: posterior interosseous nerve
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| Adductor Pollicis Longus (A,N) | A: abd, extends thumb, abd wrist
N: posterior interosseous nerve
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| Extensor Pollicis Longus, Brevis (A,N) | A: extends thumb
N: posterior interosseous nerve
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| Extensor Indicis (A,N) | A: ext index figer, wrist
N: posterior interosseous nerve
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| Iliposoas: Iliacus (A,N) | A: flexion of thigh or trunk
N: femoral nerve
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| Ilipsoas: Psoas Major (A,N) | A: bi(flex thigh trunk), uni(lat flex vertebral column)
N: ventral rami
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| Sartorius (O,I,A,N) | O: anterior superior iliac spine
I: medial proximal tibia
A: flex, abd, lat rot thigh; knee flex
N: femoral nerve
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| Adductor Magnus (A,N) | A: add, med rot, ext hip
N: obturator nerve
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| Adductor Longus (O,I,A,N) | O: pubis
I:linea aspera
A: add, flex, lat rot hip
N: obturator nerve
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| Adductor Brevis (A,N) | A: add, med rot hip
N: obturator nerve
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| Pectineus (A,N) | A: add, flex, med rot thigh
N: femoral, obturator nerve
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| Gracilis (A,N) | A: add, flex, med rot hip
N: obturator nerve
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| Rectus Femoris (O,I,A,N) | O: anterior inferior iliac spine
I: tibial tuberosity
A: extends knee, flex hip
N: femoral nerve
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| Vastus Lateralis (O,I,A,N) | O: intertrochanteric line
I: tibial tuberosity
A: extends knee
N: femoral nerve
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| Vastus Medialis (O,I,A,N) | O: intertrochanteric line
I: tibial tuberosity
A: extends knee
N: femoral nerve
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| Vastus Intermedius (O,I,A,N) | O: anterior proximal shaft of femur
I: tibial tuberosity
A: extends knee
N: femoral nerve
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| Tensor Fascia Latae (O,I,A,N) | O: iliac crest, anterior superior iliac spine (ASIS)
I: iliotibial tract
A: flex, abd hip
N: superior gluteal nerve
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| Glueteus Maximus (O,I,A,N) | O: dorsal ilium, sacrum, coccyx
I; gluteal tuberosity, iliotibial tract
A: ext, lat rot, abd hip
N: inferior gluteal nerve
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| Glueteus Medius (A,N) | A: adb, med rot hip
N: superior gluteal nerve
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| Gluteus Minimus (A,N) | A: abd, med rot hip
N: superior gluteal nerve
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| Piriformis (A) | A: lat rot hip when extended
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| Obturator Externus (A) | A: lat rot hip when extended
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| Obturator Internus (A) | A: lat rot hip when extended
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| Superior, inferior Gemellus (A) | A: lat rot hip when extended
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| Biceps Femoris (O,I,A,N) | O: ischial tuberosity
I: lateral condyle of tibia
A: ext, lat rot hip; flex knee
N: sciatic nerve
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| Semitendinosus (O,I,A,N) | O: ischial tuberosity
I: medial proximal tibia
A: ext, med rot hip; flex knee
N: sciatic nerve
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| Semimembranosus (O,I,A,N) | O: ischial tuberosity
I: medial condyle of tibia
A: ext, med rot hip; flex knee
N: sciatic nerve
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| Tibialis Anterior (A,N) | A: dorsi flexion, inversion
N: deep fibular nerve
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| Extensor Digitorum Longus (A,N) | A: extend toes, dorsiflex
N: deep fibular nerve
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| Extensor Hallucis Longus (A,N) | A: ext great toe, dorsiflex
N: deep fibular nerve
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| Gastrocnemius (O,I,A,N) | O: medial, lateral condyles of femur
I: posterior calcaneus
A: plantar flex, knee flex
N: tibial nerve
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| Soleus (O,I,A,N) | O: superior tibia
I: posterior calcaneus
A: plantar flexion
N: tibial nerve
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| Flexor Digitorum Longus (A,N) | A: plantar flex; inverts, flex toes
N: tibial nerve
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| Flexor Hallucis Longus (A,N) | A: plantar flex; inverts, flex toes
N: tibial nerve
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| Tibial Posterior (A,N) | A: plantar flex, inverts
N: tibial nerve
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