HLSC 2F95 Study Guide - Skeletal Muscle, Myosin, Sarcomere
Document Summary
Contraction is facilitated by interactions of myofilaments. Muscle = voluntary (striated skeletal) and involuntary (striated, cardiac and smooth muscle) Internal/ gross structure of muscle allows for different kinds of movement. Blood vessels: run between fasicides (provide them with nutrients, food, and get rid of wastes. Neural contraction of contraction (above = same as here) They travel though connective tissues, each cell reduces bloodetc. Fibre: myofribral (largest level) myofilaments make up myofribrials. Signal that causes action potential travels along t-tubules. Sarcomere: fundamental contractile unit of a skeletal muscle cell/fibre. Organized, regitered of myofilaments (action, myosin, titin) Myofilaments interact with one another from signal (sliding contraction) causes muscle to shorten. Titin: connected to z line (end of myosin myofilaments) Keeps z/m lines connected to a certain point (limited relaxtia to z line) Myosin myofilaments do not move only actin myofilaments. Actin myofilaments slide on to myosin filaments. Muscle fascide fibres myofribral sarcomere (levels of functional organization of a.
