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PFT study
muscular system science
| Question | Answer |
|---|---|
| muscular system | muscles that move the skeleton |
| Skeletal muscle Contactions | concentric, eccentric, isometric |
| concentric | shortening of a muscle |
| eccentric | lengthening of a muscle |
| isometric | muscle stability |
| facia | covers muscle, extends to form tendon |
| epimyseum | beneath fascia |
| perimyseum | surrounds fascicle |
| fascilce | bundle of muscle fibers |
| muscle fiber | muscle cell |
| sarcolemma | cell membrane |
| sarcoplasm | cytoplasm |
| myofibrils | bundle of filaments |
| filaments | actin:thin/myosin:thick |
| sarcomere | muscles that produce muscular contraction and consists of repeating sections of filaments |
| motor unit | functional junction where the motor neuron and muscle fiber meet |
| motor neuron axon | nerve inpulses travel from the CNS |
| synapse point of juction | point where synatic termenals end |
| Acetylcholine | the neurotransmitter involved in muscular contraction |
| anterior tibialis | o. lateral condyle and lateral surface of tibia i. tarsal and metatarsal bones -action ankle dorsiflexion, inversion |
| posterior tibialis | o. lateral condyle and postreior surface of the tibia, posterior surface of fibula i. tarsal and metatarsal bones-action ankle plantarflexion, inversion |
| Peroneus Longus | o. Laterial condyle of tibia, head and shaft of fibia i. tarsal and metatarsal bones- action ankle plantarflexion, eversion, supports foot arch |
| Soleus | o. head and shaft of fibula, posterior surface of tibia i.posterior surface of calcaneus-action ankle plantarflexion |
| gastrocnemius | o.lateral/medial condyles of femur i. posterior surface of cacaneus-action ankle plantarflexion,knee flexion |
| biceps femur | o. ischial tuberrosity,posterior surface of femur i. head of fibula, lateral condyle of tibia- action knee flexion, hip extension |
| semimembranosus | o. ischial tuberosity i. medial condyle of tibia- action knee flexion, hip extension |
| semitendinosus | o. ischial tuberosity i.medial condyle of tibia- action knee flexion, hip extension |
| popliteus | o.lateral condyle of femur i. medial surface of tibia- action knee flexion |
| vastus lateralis | o. greater trocanter, posterior surface of femur i.patella, tibial tuberosity- action knee extension |
| vastus medials | o. medial surface of femur i. patella, tibial tuberosity- action knee extension |
| vastus intermedius | o. anterior and lateral surfaces of femur i. patella, tibial tuberosity- action knee extension |
| rectus femoris | o. anterior- inferior iliac spine i. patella, tibial tuberosity- action knee extention, hip flexion |
| adductor longus | o. anterior pubic bone i. posterior femur- action hip adduction, flexion, and internal rotation |
| adductor magnus | o. ishial tuberosity i. posterior femur- action hip adduction,flexion, rotation |
| adductor brevis | o.anterior pubic bone i.posterior femur- action hip adduction, flexion, internal rotation |
| pectineus | o.anterior pubic bone i. posterior femur- action hip adduction,flexion, internal rotation |
| gracilis | o. anterior pubic bone i. proximal medial tibia- action hip adduction, flexion, internal rotation |
| tensor fascia latae | o.anterior iliac crest i. iliobial band- action hip abduction, flexion, internal rotation |
| gluteus minimus | o. lateral surface of ilium i. greater trocantor of femur- action hip abduction, internal rotation |
| gluteus medius | o. lateral surface of ilium i. grater trocanter of femur- action hip abduction,internal rotation |
| sartorius | o. anterior-superior iliac spine i. proximal medial tibia-action hip abduction,flexion, external rotation |
| glute medius | o. lateral surface of ilium i. greater trochanter of femur- action hip abduction, external rotation |
| piriformis | o. anterior sacrum i. greater trochanter of femur- action hip abduction, external rotation, extension |
| gluteus maximus | o. sacrum, coccyx, posterior ilium i. posterior femur, iliotibial band- action hip extension, external rotation |
| psoas | o. lumbar vertebrae and vertebral discs i. lesser trochanter of femur- action hip flexion,external rotation |
| rectus abdominus | o. pubic symphysis i. xiphoid process, costal cartilage- action spinalflexion, lateral flexion, rotation |
| external oblique | o. outer surfaces of lower ribs 4-12 i. anterior iliac crest, linea alba- action spinal flexion, lateral flexion, contralateral rotation |
| transverse abdominus | o.costal cartilage,lumbar vertebrae,iliac crest, ribs 7-12 i. linear alba, pubic crest- action spinal flexion,lateral flexion, contralateral rotation |
| internal oblique | o. iliac crest, thoracolumbar fascia i. lower ribs 9-12, linea alba, pubic crest- action spinal flexion,lateral flexion, colateral rotation |
| multifidus | o. posterior sacrum,spinus processes C,T,L i. anterior iliac crest, linea alba- action spinal extension, contralateral rotation |
| transversospinalis | o. transverse spinal processes i. spinal spinous process, occipital bone- action spinal flexion, lateral flexion, contralateral rotation |
| pelvic floor muscle | o. pelvic bowl i. pelvic bowl- action intrinsic core stabilization |
Created by:
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