52) Which of the following statements is true? A) Cardiac muscle cells are found

Question

52) Which of the following statements is true? A) Cardiac muscle cells are found in the heart and large blood vessels. B) Smooth muscle cells have T tubules. C) Striated muscle cells are long and cylindrical with many nuclei. D) Cardiac muscle cells have many nuclei. 53) The sliding filament model of contraction involves A) the shortening of thick filaments so that thin filaments slide past B) the Z discs sliding over the myofilaments C) actin and myosin shortening but not sliding past each other D) actin and myosin sliding past each other and partially overlapping

Explanation / Answer

52. The answer is C) Striated muscle cells are long and cylindrical with many nuclei.
53. The answer is D) actin and myosin sliding past each other and partially overlap

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