Smooth muscle is characterized by all of the following EXCEPT __________.
A) it appears to lack troponin
B) there are no sarcomeres
C) there are more thick filaments than thin filaments
D) there are noncontractile intermediate filaments that attach to dense bodies within the cell

Question

Quizplus · Accepted Answer

Smooth muscle actually has more thin filaments than thick filaments, which is the opposite of skeletal muscle. The lack of sarcomeres and presence of intermediate filaments and dense bodies are characteristics of smooth muscle, as is the apparent absence of troponin.

Smooth Muscle Is Characterized by All of the Following EXCEPT