Question

Select the statements that are true about skeletal muscle but not smooth muscle. Select all that are correct.

A. Calcium binds to troponin
B. there is only one neuromuscular junction per cell
C. myosin light chain kinase triggers contraction
D. these have t-tubules

Answer 1

Skeletal muscle and smooth muscle differ in terms of calcium binding to troponin, the presence of t-tubules, and the number of neuromuscular junctions per cell.

Step-by-step explanation:

Skeletal muscle and smooth muscle have several differences. One of these differences is that calcium binds to troponin in skeletal muscle but not in smooth muscle. Another difference is that skeletal muscle has t-tubules, which are invaginations of the cell membrane that allow for the rapid transmission of electrical signals. Smooth muscle does not have t-tubules. Additionally, while there is only one neuromuscular junction per cell in skeletal muscle, smooth muscle can have multiple neuromuscular junctions scattered throughout the cell.