What is the correct definition for “target heart rate range”?

The muscular system is responsible for functions such as maintenance of posture, locomotion, and control of various circulatory systems. Muscle tissue can be divided functionally (voluntarily or involuntarily controlled) and morphologically ( striated or non-striated). These classifications describe three distinct muscle types: skeletal, cardiac and smooth. Skeletal muscle is voluntary and striated, cardiac muscle is involuntary and striated, and smooth muscle is involuntary and non-striated.

Key Terms:

myofibril: A fiber made up of several myofilaments that facilitates the generation of tension in a myocyte.

myofilament: A filament composed of either multiple myosin or actin proteins that slide over each other to generate tension.

myosin: A motor protein which forms myofilaments that interact with actin filaments to generate tension.

actin: A protein which forms myofilaments that interact with myosin filaments to generate tension.

striated: The striped appearance of certain muscle types in which myofibrils are aligned to produce a constant directional tension.

voluntary: A muscle movement under conscious control (e.g. deciding to move the forearm).

involuntary: A muscle movement not under conscious control (e.g. the beating of the heart).

myocyte: A muscle cell.

Explanation: Sorry if im wrong