To generate the electrical impulses that cause the heart muscle to contract
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myofibril
myofilament myofibril myofiber fascicle muscle
The connective tissue surrounding the fascicle of a muscle is the perimysium.
A fascicle is wrapped in perimysium, which is a connective tissue sheath that surrounds bundles of muscle fibers. It provides structural support and helps protect the muscle fibers within the fascicle.
fascicle
Perimysium
The Fascicle
Nerve fascicle
Multipennate.
The other name for a fascicle is a "bundle." In anatomy, it often refers to a bundle of muscle fibers or nerve fibers. In botany, it can describe a cluster of flowers or leaves.
fascicle