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What is a muscle striation made of?
The striations seen in skeletal muscle fibers are the result of the alignment of hundreds of myofibrils within each muscle fiber. A myofibril is a cylindrical organelle as long as the muscle fiber. Myofibrils contain bundles of myofilaments, which are actin proteins and myosin proteins. The differences in the thicknesses of the myofilaments accounts for the banding pattern of light and dark striations.
What are rodlike structures within skeletal muscles that contain filaments organized into sarcomeres?
myofilaments
What are bundles of muscles fibers within a muscle called?
In forming whole muscles, individual muscle fibers are arranged in bundles, or fascicles, held together by fibrous connective tissue.Answer is Fascicles.
What is Non-striated involuntary muscle type?
its Smooth muscle is an involuntary non-striated muscle, so-called because it has no sarcomeres and therefore no striations (bands or stripes). It is divided into two subgroups, single-unit and multiunit smooth muscle. Within single-unit muscle, the whole bundle or sheet of smooth muscle cells contracts as a syncytium. lol i know more than u
What is an increase in the diameter of muscle fibers owing to the production of more myofibrils mitochondria sarcoplasmic reticulum and so forth?
Muscular Hypertrophy is the increase in muscle size due to increased number of myofibrils et al. Each muscle fiber (myocyte syncytium) consists of a cell membrane (sarcolemma) containing myofilaments actin and myosin arranged in end to end segments called sarcomeres. Muscle fibers are produced by fusion of multiple myoblasts during development, with the end result being a multinucleated syncytial cell which begins to produce myofilaments. Muscle growth occurs by production of additional myofilaments within each muscle fiber, the process called cellular hypertrophy. This results in enlargement of the whole muscle, also called hypertrophy. The number of myocytes remains the same. Existing myocytes can be repaired during regeneration following a severe injury. Satellite cells immediately adjacent to each muscle fiber proliferate and grow, fusing to eachother and existing damaged myofibers. Severe damage also results in fibrosis, or replacement of myofibers with stiff connective tissue, and results in impaired movement. In any case the number of muscle fibers remains the same.
Striations of skeletal muscle are produced by?
Skeletal Muscle (as well as Cardiac Muscle) have striations do to their sarcomere's anatomy. The sarcomere is the functional unit of the muscle and appears striated because the different thick and thin filaments present.
What does intramuscular use mean?
Into The Muscle; Within The Muscle
Which structure is a bundle or group of nerve fibers located within the brain or spinal cord?
a tract is a bundle or group of nerve fibers located within the brain or spinal cord
Location of the Left and right bundle branches?
within the interventricular septum
What is a bundle of nerve processes inside the CNS?
The usual name for a bundle of nerve processes within the CNS is "tract" or "fasciculus"
What is a bundle of nerve fibers within the central nervous system?
Called a tract.
What are the bundles of muscle fibers within a skeletal muscle?
fascicle
