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Does the arrangement of myofilaments produces the striation of a skeletal muscle cell?
Yes.
What changes shape when myofilaments contract?
The sarcomere, which is the basic contractile unit of a muscle, shortens in length when myofilaments contract. The myosin heads pull on the actin filaments, causing them to slide past each other and overlapping more, resulting in muscle contraction.
What type of cell is a heart cell?
The heart cells are muscle, the type called involuntary muscle.
What is a cell membrane of a muscle fiber called?
what is the plasma membrane of the muscle cell
What site where the motor neuron and muscle cell meet is called the?
The site where a motor neuron and muscle cell meet is called the neuromuscular junction. This is where the motor neuron releases neurotransmitters that signal the muscle cell to contract.
Does the arrangement of myofilaments produces the striation of a skeletal muscle cell?
Yes.
What are the muscle structures from largest to smallest?
The organization of a skeletal muscle from smallest to largest is as follows: myofilaments > myofibrils > muscle fiber > fascicle > muscle
What does muscles contain?
Muscle fibres contain two myofilaments called actin and myosin
What produces the striations of a skeletal muscle cell?
Skeletal muscle is one of the three types of muscle and it is a structure of a striated muscle tissue. The muscle is made up of myocytes or muscle fibers.
What is the smallest myfibril myofilament muscle fiber or fascicles?
The smallest unit among myofibrils, myofilaments, muscle fibers, and fascicles is the myofilament. Myofilaments are the microscopic protein filaments (actin and myosin) within myofibrils that are responsible for muscle contraction. Myofibrils are bundles of myofilaments, muscle fibers are composed of many myofibrils, and fascicles are groups of muscle fibers.
What is the correct sequencing of the microstructure of skeletal muscle?
muscle fiber, myofibril, myofilaments, sarcomere
What is microscopic threadlike structures found in skeletal muscle fibers?
myofilaments
What are the thin fibers responsible for muscle contraction?
The thin myofilaments are actin. They slide between the thick filaments called myosin.
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 step is this in the contraction of a muscle cell As calcium is actively reabsorbed into the sarcoplasmic reticulum its concentration at the myofilaments decreases?
I have no idea i was just really boerd lol hope you find the real answer
What is a muscle cell called?
The scientific name for a muscle cell is a myocyte. Myocytes are also sometimes called muscle fibers. They are long, tube shaped, cells that develop from myoblasts.
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.
