BIOL 205 Lecture Notes - Lecture 3: Fascia, Deep Fascia, Skeletal Muscle
Document Summary
Chapters 12a appendicular muscles + muscle tissue (ch. Respond to stimulation from the nervous system, causing them to shorten. Antagonist - action opposes those of the agonist. Synergist - assists the prime mover in performing its action. contributes to tension exerted close to the insertion of the muscle prevents movement at a joint, thereby stabilizing the origin of the agonist. Muscle fibers = muscle cells contain myofibrils composed of myofilaments: actin, myosin. Stabilize and control the movements of the pectoral and pelvic girdles. Organized into groups based on their locations or the part of the skeleton they move. Work in groups that are either synergistic or antagonistic. Muscles that move the pelvic girdle and lower limb. The most powerful and largest muscles in the body. Several of these muscles cross and act upon two joints. Most muscles originate on the os coxae, insert on the femur. Help stabilize the coxal joint support the body during standing and walking.
