Question

question 4
muscle myofibrils:
a extend from the sarcolemma to the t - tubule
b hold muscle cells together
c contain myosin and actin myofilaments
d are found in the sarcolemma
e do not appear striated

Explanation:

Muscle myofibrils are composed of myosin (thick) and actin (thin) myofilaments. The sarcolemma is the cell membrane of a muscle cell. T - tubules are invaginations of the sarcolemma. Myofibrils run the length of the muscle fiber (not from sarcolemma to T - tubule). Connective tissues (not myofibrils) hold muscle cells together. Myofibrils give skeletal muscle its striated appearance.

Answer:

C. contain myosin and actin myofilaments