MICROANATOMY

Detailed explanation-1: -When a group of muscle fibers is “bundled” as a unit within the whole muscle it is called a fascicle. Fascicles are covered by a layer of connective tissue called perimysium (see Figure 10.2. 1). Fascicle arrangement is correlated to the force generated by a muscle and affects the muscle’s range of motion.

Detailed explanation-2: -Each fascicle is wrapped in connective tissue: the perimysium. The process is repeated within the fascicle, with each muscle fibre surrounded by an endomysium. Blood vessels and nerve fibres enter the muscle via this connective tissue network.

Detailed explanation-3: -A nerve fascicle is also called a fasciculus. A nerve fascicle is enclosed by perineurium, a layer of fascial connective tissue. Each enclosed nerve fiber in the fascicle is enclosed by a connective tissue layer of endoneurium. Bundles of nerve fascicles are called fasciculi and are constituents of a nerve trunk.

Detailed explanation-4: -Muscle force and contraction are generated by contractile fiber cells grouped in fascicle bundles, which transmit the mechanical action between origin and insertion attachments of the muscle.

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.