BIO 212 Lecture Notes - Lecture 9: Blood Vessel, Muscular System, Cori Cycle
11 Jan 2018
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Document Summary
An introduction to muscle tissue: muscle tissue, a primary tissue type, divided into, skeletal muscle tissue, cardiac muscle tissue, smooth muscle tissue. Functions of skeletal muscle tissue: skeletal muscles, are attached to the skeletal system, tendon attaches muscle to bone (connective tissues, dense regular, allow us to move, the muscular system. Includes only skeletal muscles: 6 functions of skeletal muscle tissue, produce skeletal movement, maintain posture and body position, support soft tissues, guard entrances and exits (sphincter, maintain body temperature (erector pyrite muscles, store nutrient reserves (proteins) Is formed by one t tubule and 2 terminal cisternae: concentrate ca2+ (via ion pumps, releases ca2+ into sarcomeres to begin muscle contraction. Is 2 twisted rows of globular g-actin: the active sites of g-actin strands bind to myosin, nebulin, holds f-actin strands together, tropomyosin. Interaction of thick and thin filaments: tension production. Skeletal muscle contraction: the contraction cycle, contraction cycle begins, the contraction cycle involves a series of interrelated steps.
