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The long, cylindrical, contractile portions of a muscle fiber, which are composed of even smaller myofilaments, are called_____.
The arrangement of thick and thin filaments between Z lines forms a repeating subunit called a(n) _____ , which is the basic functional unit of striated muscle.
29 de jun. de 2024 · When the force-generating mechanism of a muscle is activated, it is called a (n): contraction. Within each skeletal muscle fiber densely packed, striated subunits known as ___________ extend in parallel rows from one end of the cell to the other leaving little room between for other organelles.
In addition, every muscle fiber in a skeletal muscle is supplied by the axon branch of a somatic motor neuron, which signals the fiber to contract. Unlike cardiac and smooth muscle, the only way to functionally contract a skeletal muscle is through signaling from the nervous system.
Study with Quizlet and memorize flashcards containing terms like The connective tissue covering that encloses the sarcolemma of an individual muscle fiber is called, A fascicle is a, Thick and thin myofilaments have different compositions.
Every skeletal muscle is also richly supplied by blood vessels for nourishment, oxygen delivery, and waste removal. In addition, every muscle fiber in a skeletal muscle is supplied by the axon branch of a somatic motor neuron, which signals the fiber to contract.
Hace 4 días · What do skeletal muscle contractions share in common with smooth muscle contractions? Both types of contractions generate little force or a weak force. Both types of contractions result from thick and thin filaments sliding past one another.
