Definition
A muscle fibre, or muscle cell, is the fundamental unit of skeletal muscle. Imagine it like a strand in a rope 🪢, where many strands bundle together to form a larger, functional muscle. These fibres are long and cylindrical, containing multiple nuclei. They contract when stimulated by nerve impulses, allowing for movement. Unlike regular cells, muscle fibres are specialized for contraction and force generation. They're essential for everything from walking to lifting weights 💪.