What are the two principal types of connective tissue in a muscle? collagen and myofibrils myofibrils and elastin myofibrils and disks elastin and collagen?

The two principal types of connective tissue in a muscle are collagen and myofibrils. The entire muscle is wrapped in collagen to form a fascicle. Looking at one muscle fiber, you will see that almost the entire cross section of the muscle fiber is composed of long, cylindrical strands of proteins called myofibrils.