Term
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Definition
- not a muscle attaches at T7-L5
- Point unattached at L3-4
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Term
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Definition
O - Through lumbodorsal fascia, attaches to spinous processes to T7-L5, anchors to iliac crest
I - Twists under the humerus and atachto the intertubercular groove of the humerus
A - powerul arm adductor, extensor, and medially rotates the shoulder |
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Term
Pectoralis Major
Pectoralis Major Pars Abdominalis
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Definition
O - Medial part of ribs 5-7
I - Lateral edge of the highest part of the intertubercular groove
A - rotates medially, extends, and adducts the shoulder (tennis serve or volleyball spike) |
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Term
Pectoralis Major
Pectoralis Major Pars Sternocostalis
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Definition
O - sternum and cartilage of ribs 1-7
I - lateral edge of the mdidle part of the intertubercular groove
A - adducts the arm across the chest and pulls the shoulder forward |
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Term
Pectoralis Major
Pectoralis Major Pars Clavicularis
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Definition
O - Ventral surface of the clavicle
I - Bottom of the intertubercular groove
A - Adducts the arm toward the face (follow through in bowling or upper cut in boxing) |
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Term
Trapezius
Trapezius Pars Spinalis |
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Definition
O - Spinous processes of T4-T12 (overlaps latissimus dorsi slightly)
I - Posterior portion of the spine of the scapula
A - Power muscle that pulls the scapula back and rotates it laterally |
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Term
Trapezius
Trapezius Pars Acromialis
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Definition
O - Lower end of the nuchal ligament, spinous proccesses of C6-T3
I - Medial margin of the acromial process and the distal end of the scapular spine
A - power muscle that lifts the shoulder upward and back |
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Term
Trapezius
Trapezius Pars Clavicularis
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Definition
O - begins at the superiour part of the nuchal ligament from the occipital bone and continues along the nucal ligament to C6
I- Superior border of the last lateral third of the clavicle
A - elevates scapula and helps rotate it upward |
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