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Naming Muscles
11.1, 11.2
Term | Definition |
---|---|
Prime Mover | Agonist |
Antagonist | Yields to effects of prime mover |
Synergists | Prevent unwanted movements at intermediate joints; contract and stabilize intermediate joints |
Fixators | Stabilize origin for more efficient primary action |
Naming Categories | Size, shape, Action, # of origins, location of muscle, sites of origin and insertion |
Direction--Rectus | Parallel to midline |
Direction--Transverse | Perpendicular to midline |
Direction--Oblique | Diagonal to Midline |
Size--Maximus | Largest |
Size--Minimus | Smallest |
Size--Longus | Long |
Size--Brevis | Short |
Size--Latissimus | Widest |
Size--Longissimus | Longest |
Size--Magnus | Large |
Size--Minor | Smaller |
Size--Vastus | Huge |
Shape--Deltoid | Triangular |
Shape--Trapezius | Trapezoid |
Shape--Serratus | Saw Toothed |
Shape--Rhomboid | Rhombus |
Shape--Orbicularis | Circle |
Shape--Pectinate | Comblike |
Shape--Piriformis | Pear-shaped |
Shape--Platys | Flat |
Shape--Quadratus | Square, four-sided |
Shape--Gracilis | Slender |
Action--Flexor | Reduces joint angle |
Action--Extensor | Incr. angle |
Action--Abductor | Bone away from midline |
Action--Adductor | Bone towards midline |
Action--Levator | Raises or elevates body part |
Action--Depressor | Lowers |
Action--Supinator, Pronator | Anterioly, posterioly palms |
Action--Sphincter | Decreases opening size |
Action--Tensor | Rigid |
Action--Rotator | Rotates around long axis |