ANFS241 Lecture Notes - Lecture 6: Gastrocnemius Muscle, Anatomical Terms Of Motion, Clavicle
27 Mar 2018
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3 basic types: skeletal (striated), cardiac and smooth (visceral) Location: body parts with autonomic function (gi tract, uterus, blood vessels ) Contraction is intrinsic (does not require nerve stimulation) Regulated and controlled by autonomic nervous system. Voluntary motions of the limbs (locomotion), require nervous stimulation. Grouped into distinct organs units = individual muscles. Striated characteristic striped pattern, due to orderly arrangement of the contractile proteins. Muscle fibres (myofibers) individual muscle cells (not visable) Travel the entire length of a muscle. Each fiber covered by endomysium also unites fibers together into a fascicle. Endomysium the covering of individual muscle fibers. Fascicle a group of muscle fibers, a subdivision of a muscle belly. Visible when muscle belly is cut in cross section. Perimysium surrounds the fascicles, continuous with the. Epimysium connective tissue that covers the entire muscle tendons belly (aka deep fascia) Contraction shortening of the length of the muscle. Movement of one body part relative to another.
