Which Is a TRUE Statement About Smooth Muscle

question 54

Multiple Choice

Which is a TRUE statement about smooth muscle?

• A)Smooth muscle is striated.
• B)Smooth muscle does not have thick and thin filaments.
• C)Smooth muscle does not use troponin-tropomyosin to regulate cross-bridge activity.
• D)Changes in cytosolic calcium do not regulate cross-bridge activity in smooth muscle.
• E)The myosin in smooth muscle requires phosphorylation before it can bind to ATP.

Identify and describe the structure and function of various cell junctions.

Understand the role of the extracellular matrix in cell structure and function.

Differentiate between peripheral proteins and integral proteins and their interactions with the cell membrane.

Recognize how altering receptor molecules affects cellular uptake mechanisms.

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