MICROANATOMY

Detailed explanation-1: -Each muscle is made up of groups of muscle fibers called fascicles surrounded by a connective tissue layer called perimysium. Multiple units of individual muscle fibers within each fascicle are surrounded by endomysium, a connective tissue sheath.

Detailed explanation-2: -Fascicles can be parallel, circular, convergent, pennate, fusiform, or triangular. Each arrangement has its own range of motion and ability to do work.

Detailed explanation-3: -Approximately 20–80 of these muscle fibers are grouped together in a parallel arrangement called a muscle fascicle or fiber bundle that is encapsulated by a perimysium, which is thicker than the epimysium enclosing each of the bundled muscle fibers.

Detailed explanation-4: -Common fascicle patterns include the following: Parallel fascicles have their long axes parallel to each other. Parallel fascicles can be flat or straplike, or they can bulge at their bellies and be spindle‐shaped or fusiform. Circular fascicles are arranged in concentric rings.

Detailed explanation-5: -Examples include Prunus fasciculata and Adenostoma fasciculatum. Species with flowers in fascicles include Aechmea biflora and Melicytus ramiflorus, several species of Malva, and the entire genus Flueggea. Some species of the family Alseuosmiaceae have flowers in fascicles.