Question

muscle- cross section
identify the skeletal muscle structure labeled \a\.
perimysium
endomysium
muscle fibers
epimysium

Explanation:

To identify the structure labeled "A" in the skeletal muscle cross - section:

1. Recall the layers of connective tissue in skeletal muscle:

• The epimysium is the outermost layer of connective tissue that surrounds the entire muscle.
• The perimysium surrounds bundles of muscle fibers (fascicles).
• The endomysium surrounds individual muscle fibers.
• Muscle fibers are the muscle cells themselves.

1. Looking at the diagram, the structure labeled "A" is the outermost layer surrounding the entire muscle cross - section. This matches the description of the epimysium.

Answer:

The correct option is the one labeled with "epimysium" (the option with the blue dot, which is the last option in the list: epimysium).