Which muscle type(s) has/have the least regular arrangements of actin and myosin?
A) Smooth muscle only
B) Cardiac muscle only
C) Skeletal muscle only
D) Both smooth and cardiac muscle, but not skeletal muscle
E) Smooth, cardiac, and skeletal muscle

Question

Quizplus · Accepted Answer

Smooth muscle has the least regular arrangements of actin and myosin compared to cardiac and skeletal muscle. This irregular arrangement allows for greater flexibility and plasticity of smooth muscle, which is important in functions such as blood flow regulation and digestion.

Which Muscle Type(s) Has/have the Least Regular Arrangements of Actin