When comparing smooth and skeletal muscle cells, which of the following statements is true?Multiple ChoiceSmooth muscle has a lot of actin and myosin.Smooth muscle cells are larger than skeletal muscle cells.Smooth muscle cells have striations.The myofilaments in smooth muscle do not form sarcomeres.Smooth muscle cells are multinucleated.
Question
When comparing smooth and skeletal muscle cells, which of the following statements is true?Multiple ChoiceSmooth muscle has a lot of actin and myosin.Smooth muscle cells are larger than skeletal muscle cells.Smooth muscle cells have striations.The myofilaments in smooth muscle do not form sarcomeres.Smooth muscle cells are multinucleated.
Solution
The correct statement is: "The myofilaments in smooth muscle do not form sarcomeres."
Here's why:
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Both smooth and skeletal muscle cells contain actin and myosin, so the first statement is not a distinguishing factor.
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Skeletal muscle cells are generally larger than smooth muscle cells, so the second statement is incorrect.
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Striations, or visible banding patterns, are a characteristic of skeletal muscle, not smooth muscle. Therefore, the third statement is incorrect.
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The fourth statement is correct. In smooth muscle cells, the myofilaments do not form the organized, repeating units called sarcomeres that are seen in skeletal muscle cells.
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The last statement is incorrect because it is the skeletal muscle cells that are multinucleated, not the smooth muscle cells.
Similar Questions
dicate whether each statement is true or false.1. Unlike skeletal muscle, smooth muscle is striated in appearance. 2. In smooth muscle, the actin and myosin myofilaments are in loose bundles. 3. No T tubule system exists in smooth muscles. 4. Smooth muscle contracts faster than skeletal muscle. 5. In smooth muscle, actin myofilaments are attached to dense bodies. 6. Skeletal muscle contains more actin and myosin myofilaments than smooth. 7. Smooth muscle cells are larger than skeletal muscle cells.
What do smooth, cardiac, and skeletal muscle all have in common?Multiple ChoiceThey are all uninucleated.They are all striated.They are all found in the walls of blood vessels.The cells of these muscles are all called muscle fibers.They all interlock at intercalated disks.
Multiple Select QuestionSelect all that applySelect all correct descriptions of smooth muscle.Multiple select question.Fibers are striated.Cells are spindle-shaped.Cell contraction is involuntary.Cells contain intercalated disks.Fibers are uninucleated.
A sarcomere Blank______.Multiple choice question.is the same thing as sarcoplasmic reticulumis the same thing as a muscle cellcontains both actin and myosincontains either actin or myosin
Skeletal muscle cells are:Group of answer choicesmultinucleated and found in the gut.mononucleated and found in larger muscles in the legs.abundant in gap junctions for large forceful contractions.striated in appearance due to actin and myosin proteins.
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