At the sub-cellular level, each muscle cell is composed of even smaller diameter

Question

At the sub-cellular level, each muscle cell is composed of even smaller diameter subunits called ____________ which are, themselves, filled with myofilaments composed of the contractile proteins present in the muscle cell. There are 2 types of myofilaments present: those composed of multiple molecules of actin, which are called the __________ filaments, and those that are composed of multiple molecules of myosin, called the __________ filaments. These myofilaments are arranged in specific fashion in repetitive units called _____________ that are bordered by and separated from one another by bands of non-contractile protein called ___________.

Each fascicle is surround by and separated from other fascicles by another layer of connective tissue called the ____________. If this connective tissue layer is peeled away or removed, each fascicle can then be seen to be made up of a number of even smaller-diameter subunits called ____________ - each of which is a single skeletal muscle cell. Each muscle cell is individually wrapped in its own layer of connective tissue - or endomysium. Lying just below the endomysium is the plasma membrane of the muscle cell, often referred to as the ________________.

Explanation / Answer

Myofibril, thin filaments, thick filament, Sarcomere, connecting protein ,perimysium,myo filament, sarcolemma

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