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Skeletal Muscles
Posterior
| Question | Answer |
|---|---|
| Trapezius Upper/Middle "Location" - origin & insertion | Upper Back - Base of the skull & spinous processes of C7 to T12 - Lateral clavicle and upper surface of the scapula |
| Trapezius Upper/Middle - "Primary concentric actions" | Elevation, retraction & depression of the shoulder girdle, extension, lateral flexion & rotation of the neck |
| Triceps brachii "Location" - origin & insertion | Back of the upper arm - Posterior upper humerus & scapula - Upper ulna |
| Triceps brachii - "Primary concentric actions" | Extension of the elbow, extension & abduction of shoulder joint |
| Latissimus Dorsi "Location" - origin & insertion | Sides of the back - Lower seven thoracic vertabrae, inferior angle of the scapula, thoracolumbar fascia & iliac crest - Anterior upper humerus |
| Latissimus Dorsi - "Primary concentric actions" | Adduction, external rotation of the shoulder joint |
| where is the thoracolumbar fascia ? | behind the spinal column and is positioned at both the lumbar (low back) and thoracic (mid-back) levels |
| what is the thoracolumbar fascia ? | a big broad, flat sheath of fascial tissue |
| Erector spinae "Location" - origin & insertion | Either side of the spine top to bottom - sacrum, illium, ribs & vertabrae - base of the skull, ribs & vertabrae |
| Erector spinae - "Primary concentric actions" | Extension & lateral flexion of the spine |
| what is the erector spinae ? | a group of muscles and tendons which run more or less the length of the spine on the left and the right from the sacrum to the base of the skull |
| Gluteus Maximus "Location" - origin & insertion | Buttocks - Coccyx,sacrum & iliac crest - Upper Femur & ITB (illotial band) |
| Gluteus Maximus - "Primary concentric actions" | Extension of the hip, external rotation & abduction of the hip |
| What does ITB stand for - | Illotial band |
| Where is the ITB (illotial band) located | begins at the iliac crest (the border of the most prominent bone of the pelvis) in the pelvis and runs on the lateral or outside part of the thigh until it attaches into the tibia (shinbone) |
| Gastrocnemius "Location" - origin & insertion | Calf - Posterior lower femur - calcaneus |
| Gastrocnemius - "Primary concentric actions" | Plantar flexion of the ankle & flexion of the knee |
| Soleus "Location" - origin & insertion | lower calf to ankle - upper posterior tibia - calcaneus |
| Soleus - "Primary concentric actions" | plantar flexion of the ankle |
| Hamstrings "Location" - origin & insertion | Back of the thigh - Ischium & posterior surface of femur - head of the fibula & upper medial surface of the tibia |
| Hamstrings - "Primary concentric actions" | extension of the hip, flexion of knee & tilting pelvis posteriorly |
| what is the trapezius responsible for posture wise ? | alignment of the neck & shoulder girdle |
| muscles close to the surface of the skin are called | Superficial |
| Muscles which lie closer to bone or internal organs are called | Deep Muscles |
Created by:
LeeNelson
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