Muscle quiz #5
About this set
Created by:
LautersteinConway Plus on January 23, 2012
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19 terms
Terms | Definitions |
|---|---|
 Origin: Trapezius | Occiput, Ligamentum nuchae & spinous processes of C7-T12 |
| Insertion: Trapezius | Lateral one-third of clavicle, acromion & spine of the scapula |
| Action: Trapezius | Upper: unilaterally: elevate the scapula (& upwardly rotate), laterally flex head & neck to same side & rotates to opposite side; bilaterally: extend head & neck. Middle: adduct the scapula. Lower: depress the scapula (and upwardly rotates) |
| Origin: Latissimus dorsi | Spinous processes of last 6 thoracic vertebrae, last 3-4 ribs, thoracolumbar aponeurosis & posterior iliac crest |
| Insertion: Latissimus dorsi | Crest of the lesser tubercle of the humerus |
| Action: Latissimus dorsi | Extension, medial rotation and adduction of the shoulder joint (humerus) |
| Origin: Levator scapula | Transverse processes of C 1-4 |
| Insertion: Levator scapula | Upper region of medial border and superior angle of scapula |
| Action: Levator scapula | Elevate the scapula (and downwardly rotates) |
| Origin: Rhomboid Major | Spinous processes of T2-T5 |
| Insertion: Rhomboid Major | Medial border of scapula, between the spine & inferior angle |
| Origin: Rhomboid Minor | Spinous processes of C7-T1 |
| Insertion: Rhomboid Minor | Upper portion of medial border of scapula, across from spine |
| Action: Rhomboid Major and Minor | Adduct the scapula (and downwardly rotates) |
| Origin: Spinalis, Longissimus, Iliocostalis | Sacrum, iliac crest, thoracolumbar aponeurosis. |
| Insertion: Spinalis | Thoracic spinous processes up to C2 |
| Insertion: Longissimus | Ribs, transverse processes up to the mastoid process. |
| Insertion: Iliocostalis | Ribs to cervical transverse processes. |
| Action: Spinalis, Longissimus, Iliocostalis | Unilaterally: lateral flexion of the spine to the same side; Bilaterally: extension of the spine |
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