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Unformatted text preview: wall. This muscle has characteristics of both smooth muscle and skeletal muscle. The contractile molecules arc organized very much like skeletal muscle. Like smooth muscle, it is also under involuntarv control. I. Overview of Skeletal Muscle A. Criteria Used To Name Muscles 1. Shape - deltoid (triangular), trapezius, rhomboid, latissimus (wide) 2. Action - various muscle names include the terms flexor, extensor, adductor, or pronator. 3. Location - tibialis anterior, intercostals, pectoralis major 4. Divisions - triceps brachii, quadriceps femoris 5. Size relationships - gluteus maximus, gluteus medius, gluteus minimus. Several names include the terms "brevis" (short), and "longus" (long). 6. Direction of fibers - transversus (across), rectus (straight) B. Skeletal Muscle Shapes A fascicle is a bundle of muscle fibres that arc encased by perimysium....
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- Fall '09