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Muscles 2nd Quiz Liz
Liz's 2nd Muscle Quiz (O,I,A)
| Question | Answer |
|---|---|
| Slack | Passively do the muscle action.(You do it for them) |
| Antagonist | Muscle capable of performing the OPPOSITE action to that of the agonist (& its synergists)Passive Muscle |
| Synergist | A muscle that ASSIST the agonist in a given action at a giving joint; Usually weaker than the agonist Active Muscle |
| Agonist or Prime Movers | The muscle that is STRONGER in a given action at a given joint Active Muscle (strongest muscles) |
| Stretch | Perform actions that are opposite the muscle's action. |
| Fixator | These muscles STABILIZE the joint during movement. |
| Flexors | Muscles that cross the long axis of a joint anteriorly (except knee, which crosses the joint posteriorly) will most likely flex that joint. |
| Extensors | Muscles that cross a joint posteriorly (except knee, which crosses the joint anteriorly) |
| Abductors | muscles that cross a joint laterally |
| Adductors | muscles that cross a joint medially |
| Rotators | muscles that cross a joint obliquely |
| Isotonic | (same tension)-length of muscles changes during contraction. 2 types |
| Isotonic Contraction Concentric - | muscle SHORTENS during contraction- insertion moves towards origen (or vice versa) |
| Isotonic Contraction Eccentric | muscles LENGHTENS during contraction- origen and insertion move further apart |
| Isometric | muscle length does not change |
| Gluteus Medius Origin | Anterior, superior gluteal line(back of ilium between crest) |
| Gluteus Medius Insertion | outer surface of greater trochanter (lat |
| Gluteus Medius Action | PM:(all fibers) AbductionAnterior Fibers SYN: flexion, medial rotationMiddle fibers Strong abductors Posterior fibers hyperextention, lateral rotation. FIXATOR @ Hip joint |
| Gluteus Minimus Origin | Inferior gluteal line(btwn middle & inferior curved lines of ilium) |
| Gluteus Minimus Insertion | front of greater trochanter (anterior) |
| Gluteus Minimus Action | SYN: abduction, flexion, medial rotation |
| Piriforms (6 deep lateral rotators) Origin | anterior, sacrum (exits the greater sciatic notch) |
| Piriforms Insertion | Superior (top) great trochanter |
| Piriforms Action | SYN: lateral rotation and abduction |
| Glemellus Superior (6 deep lateral rotation)Origen | ischium and pubis |
| Glemellus Superior Insertion | greater trochanter; inferior to piriformis |
| Glemellus Superior Action | SYN: lateral rotation |
| Obturator Internus (6 deep lateral rotation) Origin | ischium and pubis |
| Obturator Internus Insertion | greater trochanter; inferior to piriformis |
| Obturator Internus Action | SYN: lateral rotation |
| Glemellus Inferior (6 deep lateral rotation) Origin | ischium and pubis |
| Glemellus Inferior Insertion | greater trochanter; inferior to piriformis |
| Glemellus Inferior Action | SYN: lateral rotation |
| Obturator Externus (6 deep lateral rotation) Origin | ischium and pubis |
| Obturator Externus Insertion | greater trochanter; inferior to piriformis |
| Obturator Externus Action | SYN: lateral rotation |
| Quadratus Femoris (6 deep lateral rotation)Origin | Ischial tuberocity |
| Quadratus Femoris Insertion | greater trochanter- inferior to GOGO's |
| Quadratus Femoris Action | SYN: lateral rotation (pulls)Adduction |
| Pecitineus Origin | superior ramus of the pubis of os coxa |
| Pecitineus Insertion | inferior & lateral to lesser of femur |
| Pecitineus Action | SYN: adduction & flexion |
| Adductor Longus Origin | Body of pubis (anterior) |
| Adductor Longus Insertion | mid-medial lineas aspera of femur |
| Adductor Longus Action | PM; Adduction SYN: Flexion, lateral rotation |
| Adductor Longus Origin | Body of pubis of os coxa |
| Adductor Longus Insertion | proximal, medial, linea aspera of femur |
| Adductor Longus Action | PM; Adduction SYN: Flexion, |
| Adductor Magnus Origin | Body of pubis, inferior ramus of pubis, to ramus of ishium to the ishial tuberocity |
| Adductor Magnus Insertion | length of the medial linea aspera to the addutor tubercle of femur |
| Adductor Magnus Action | PM:Adduction (middle fibers) SYN:flex,lateral rotation, (anterior fibers) extension, hyperextention, medial rotation (posterior fibers) |
| Gracilis Origin | body of pubis |
| Gracilis Insertion | proximal, anterior, medial, tibial, shaft (pes aserine) |
| Gracilius Action | Hip SYN: adduction, flexion w/extended knee Knee SYN: flexion, medial rotation |
| Vastus Medial Origin | medial linea aspera of femur |
| Vastus Medial Insertion | patella to tibial tuberocity of tibia |
| Vastus Medial Action | PM: knee extention |
| Vastus Latralis Origin | lateral linea aspera, inferior greater trochanter |
| Vastus Latralis Insertion | patella to tibial tuberocity of tibia |
| Vastus Latralis Action | PM: knee extention |
| Vastus Intermedius Origin | anterior, lateral shaft of femur |
| Vastus Intermedius Insertion | patella to tibial tuberocity of tibia |
| Vastus Intermedius Action | PM: knee extention |
| Gastrocnemius Origin | medial and lateral condyles of femur (superior aspect) |
| Gastrocnemius Insertion | archilles tendon to calcaneus |
| Gastrocnemius Action | Knee SYN: flexion Ankle PM: planterflexion |
| Popliteus Origin | lateral condyle of femur |
| Popliteus Insertion | posterior, medial of tibia |
| Popliteus Action | SYN: medial rotation to unlock the knee, flexion |
| Plantaris Origin | lateral supracondyle ridge of femur |
| Plantaris Insertion | archilles tendon to calcaneus |
| Plantaris Action | SYN: knee flexion, Ankle plantaflextion |
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