Answered

How does smooth muscle compare to skeletal muscle?


ASmooth muscle contracts more slowly and relaxes more slowly.
BSmooth muscle contracts more rapidly and relaxes more slowly.
CSmooth muscle contracts more rapidly and relaxes more rapidly.
DSmooth muscle contracts more slowly and relaxes more rapidly.

Verified Answer :

Final answer:

Smooth muscle contracts and relaxes more slowly than skeletal muscle, which allows for prolonged muscle tension important for functions like digestion and blood vessel control. In contrast, skeletal muscle allows for quick movements and rapid relaxation. Therefore, smooth muscle's slower contraction and relaxation speeds distinguish it from skeletal muscle.


Explanation:

Comparison of Smooth Muscle and Skeletal Muscle

Smooth muscle and skeletal muscle are two types of muscle tissue in the human body, each with distinct functions and characteristics. Understanding their differences is crucial for appreciating how they contribute to bodily movements and functions.

Key Differences

  • Contraction Speed: Smooth muscle contracts more slowly than skeletal muscle. This is due to the structure of smooth muscle fibers, which allows for prolonged contractions.
  • Relaxation Speed: Smooth muscle also relaxes more slowly compared to skeletal muscle. This sustained tension is crucial for functions like maintaining blood pressure and digestion.

In contrast, skeletal muscle contracts rapidly and can also relax quickly, contributing to swift movements like running or lifting.

Answer Choice

Based on the characteristics discussed, the correct answer is: Smooth muscle contracts more slowly and relaxes more slowly.


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