Muscles - Trunk Word Scramble
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Term | Definition |
external intercostals | origin: inferior border of each rib |
external intercostals | insertion: superior border of next rib |
external intercostals | action: elevate ribs |
internal intercostals | origin: superior border of each rib |
internal intercostals | insertion: inferior border of the preceding rib |
internal intercostals | action: depress ribs |
diaphragm | origin: xiphoid process, cartilages of ribs 4-10, and anterior surfaces of lumbar vertebrae |
diaphragm | insertion: central tendinous sheet |
diaphragm | action: contraction expands thoracic cavity, compresses abdominopelvic cavity |
external oblique | origin: lower eight ribs |
external oblique | insertion: linea alba and iliac crest |
external oblique | action: compresses abdomen, depresses ribs, flexes or laterally flexes vertebral column |
internal oblique | origin: illiac crest and adjacent connective tissues |
internal oblique | insertion: lower ribs, xiphoid of sternum and linea alba |
internal oblique | action: compresses abdomen, depresses ribs, flexes or laterally flexes vertebral column |
transversus abdominis | origin: cartilages of lower ribs, iliac crest, and adjacent connective tissues |
transversus abdominis | insertion: linea alba and pubis |
transversus abdominis | action: compresses abdomen |
rectus abdominis | origin: superior surface of pubis around symphysis |
rectus abdominis | insertion: inferior surfaces of costal cartilages (ribs 5-7) and xiphoid process |
rectus abdominis | action: depresses ribs, flexes vertebral column |
Created by:
lizzy.spangler
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