Question | Answer |
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 |
Transeversus Abdominis
(A,N) | A: compresses abdominal contents
N: intercostal nerves (T7-12), L1 |
Internal Intercostals
(A,N) | A: aid in force expiration
N: intercostal nerves |
Scalenes
(A,N) | A: elevates ribs 1,2, flex and rotate neck
N: cervical spinal nerves |
Erector Spinae
(A,N) | A: extends vertebral column
N: spinal nerves |
Diaphragm
(A,N) | A: prime mover of inspiration
N: phrenic nerve |
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) |
Temporalis
(O,I,A,N) | O: temporal fossa
I: coronoid process of mandible
A: elevates and retracts mandible
N: trigeminal nerve |
Platysma
(A,N) | A: tenses skin of neck, depresses mandible
N: facial nerve |
Risorius
(A,N) | A: draws corners of lips laterally
N: facial nerve |
Semispinalis
(A,N) | A: extends vertebral column, rotates to opposite side
N: spinal nerves |
Serrateus Anterior
(A,N) | A: protracts shoulder girdle
N: long thoracic nerve |
Pectoralis Minor
(A,N) | A: draws rib cage superiorly
N: medial and lateral pectoral nerves |
Zygomaticus (minor, major)
(A,N) | A: smiling
N: facial nerve |
Mentalis
(A,N) | A: protrudes lower lip, wrinkles chin
N: facial nerve |
Orbicularis Oris
(A,N) | A: pursues and protrudes lips
N: facial nerve |
Occipital Belly (occipitalis)
(O,I,A,N) | O: occipital and temporal bones
I: galea aponeurotica
A: pulls scalp posteriorly
N: facial nerve |
Buccinator
(A,N) | A: draws corners of lips laterally, holds food between teeth during chewing
N: facial nerve |
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 |
Orbicularis Oculi
(A,N) | A: blinking, squinting
N: facial nerve |
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 |
Subclavius
(A) | A: stabilize and depress pectoral girdle |
Quadratus Lumborum
(A,N) | A: uni (lateral flexion) bi (extension of lumbar spine - forced inspiration)
N: T12 and upper lumbar nerves |
External Oblique
(A,N) | A: bi- trunk flexion, rotation, lateral flexion
N: intercostal nerves (T7-12) |
Internal Oblique
(A,N) | A: bi- trunk flexion, rotation, lateral flexion
N: intercostal nerves (T7-12), L1 |
External Intercostals
(A,N) | A: aid in inspiration
N: intercostal nerves |
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 |
Subscapularis
(O,I,A,N) | O: subscapular fossa of scapula
I: lesser tubercle of humerus
A: shoulder med rot
N: subscapular nerves |
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 |
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 |
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 |
Trapezius
(A,N) | A: shrug (elevate) shoulders and extend head
N: accessory nerve |
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 |
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 |
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 |
Deltoid
(I,A,N) | I: deltoid tuberosity
A: prime mover of shoulder add (fibers), flex, ext, med and lat rot
N: axillary nerve |
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 |
Anconeus
(A,N) | A: elbow ext
N: radial nerve |
Triceps brachii
(I,A,N) | I: olecranon process
A: elbow ext
N: radial nerve |
Brachialis
(I,A,N) | I: coronoid process of ulna
A: elbow flex
N: musculocutaneous nerve |
Biceps brachii
(I,A,N) | I: radial tuberosity
A: elbow flex, forearm supination
N: musculocutaneous nerve |
Coracobrachialis
(O,I,A,N) | O: coracoid process of scapula
I: medial surface of humerus shaft
A: shoulder flex, add
N: musculocutaneous nerve |
Brachioradialis
(O,I,A,N) | O: lateral supracondylar ridge of distal humerus
I: styloid process of radius
A: elbow flexion
N: radial nerve |
Pronator Teres
(A,N) | A: pronates forearm
N: median nerve |
Flexor Carpi Radialis
(A,N) | A: wrist flex, abd
N: median nerve |
Palmaris Longus
(A,N) | A: wrist flex
N: median nerve |
Flexor Carpi Ulnaris
(A,N) | A: wrist flex, add
N: ulnar nerve |
Flexor Digitorum Superficialis
(A,N) | A: flex wrist, fingers 2-5
N: median nerve |
Flexor pollicis longus
(A,N) | A: flexes thumb
N: median nerve |
Flexor digitorum profundus
(A,N) | A: flexes wrist, all fingers
N: ulnar, median nerves |
Pronator Quadratus
(A,N) | A: prime mover forearm pronation
N: median nerve |
Extensor Carpi Radialis Longus
(A,N) | A: extends wrist, adb
N: radial nerve |
Extensor Carpi Radialis Brevis
(A,N) | A: extends wrist, abd
N: radial nerve |
Extensor Digitorum
(A,N) | A: prime mover ext fingers, wrist
N: radial nerve |
Extensor Carpi Ulnaris
(A,N) | A: extends wrist, add
N: posterior interosseous nerve |
Supinator
(A,N) | A: supinates forearm
N: posterior interosseous nerve |
Adductor Pollicis Longus
(A,N) | A: abd, extends thumb, abd wrist
N: posterior interosseous nerve |
Extensor Pollicis Longus, Brevis
(A,N) | A: extends thumb
N: posterior interosseous nerve |
Extensor Indicis
(A,N) | A: ext index figer, wrist
N: posterior interosseous nerve |
Iliposoas: Iliacus
(A,N) | A: flexion of thigh or trunk
N: femoral nerve |
Ilipsoas: Psoas Major
(A,N) | A: bi(flex thigh trunk), uni(lat flex vertebral column)
N: ventral rami |
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 |
Adductor Magnus
(A,N) | A: add, med rot, ext hip
N: obturator nerve |
Adductor Longus
(O,I,A,N) | O: pubis
I:linea aspera
A: add, flex, lat rot hip
N: obturator nerve |
Adductor Brevis
(A,N) | A: add, med rot hip
N: obturator nerve |
Pectineus
(A,N) | A: add, flex, med rot thigh
N: femoral, obturator nerve |
Gracilis
(A,N) | A: add, flex, med rot hip
N: obturator nerve |
Rectus Femoris
(O,I,A,N) | O: anterior inferior iliac spine
I: tibial tuberosity
A: extends knee, flex hip
N: femoral nerve |
Vastus Lateralis
(O,I,A,N) | O: intertrochanteric line
I: tibial tuberosity
A: extends knee
N: femoral nerve |
Vastus Medialis
(O,I,A,N) | O: intertrochanteric line
I: tibial tuberosity
A: extends knee
N: femoral nerve |
Vastus Intermedius
(O,I,A,N) | O: anterior proximal shaft of femur
I: tibial tuberosity
A: extends knee
N: femoral nerve |
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 |
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 |
Glueteus Medius
(A,N) | A: adb, med rot hip
N: superior gluteal nerve |
Gluteus Minimus
(A,N) | A: abd, med rot hip
N: superior gluteal nerve |
Piriformis
(A) | A: lat rot hip when extended |
Obturator Externus
(A) | A: lat rot hip when extended |
Obturator Internus
(A) | A: lat rot hip when extended |
Superior, inferior Gemellus
(A) | A: lat rot hip when extended |
Biceps Femoris
(O,I,A,N) | O: ischial tuberosity
I: lateral condyle of tibia
A: ext, lat rot hip; flex knee
N: sciatic nerve |
Semitendinosus
(O,I,A,N) | O: ischial tuberosity
I: medial proximal tibia
A: ext, med rot hip; flex knee
N: sciatic nerve |
Semimembranosus
(O,I,A,N) | O: ischial tuberosity
I: medial condyle of tibia
A: ext, med rot hip; flex knee
N: sciatic nerve |
Tibialis Anterior
(A,N) | A: dorsi flexion, inversion
N: deep fibular nerve |
Extensor Digitorum Longus
(A,N) | A: extend toes, dorsiflex
N: deep fibular nerve |
Extensor Hallucis Longus
(A,N) | A: ext great toe, dorsiflex
N: deep fibular nerve |
Gastrocnemius
(O,I,A,N) | O: medial, lateral condyles of femur
I: posterior calcaneus
A: plantar flex, knee flex
N: tibial nerve |
Soleus
(O,I,A,N) | O: superior tibia
I: posterior calcaneus
A: plantar flexion
N: tibial nerve |
Flexor Digitorum Longus
(A,N) | A: plantar flex; inverts, flex toes
N: tibial nerve |
Flexor Hallucis Longus
(A,N) | A: plantar flex; inverts, flex toes
N: tibial nerve |
Tibial Posterior
(A,N) | A: plantar flex, inverts
N: tibial nerve |