Look at the image of a muscle fiber. Muscle fiber is shown. Actin and myosin are shown on the fiber. Which is represented by the image? smooth muscle cardiac muscle actin and myosin activated sacromere and tendon

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;

it's not c. i took the quiz and got it wrong. so my best guess is b.

have a great day, and hope this .