Answered

The muscle between your shoulder and neck, known as the trapezius, is most likely composed of:

A. fast twitch; this muscle often stays relaxed to support the head and neck
B. fast twitch; this muscle is contracted often to support the head and neck
C. slow twitch; this muscle often stays relaxed to support the head and neck
D. slow twitch; this muscle is contracted often to support the head and neck



Answer :

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Final answer:

The trapezius muscle, supporting the head and neck, is primarily composed of slow-twitch muscle fibers that help in sustaining posture by remaining relaxed.


Explanation:

Slow twitch; this muscle often stays relaxed to support the head and neck. The trapezius muscle, located between the shoulder and neck, is predominantly composed of slow-twitch muscle fibers. These muscle fibers are characterized by their endurance and are more suited for prolonged, low-intensity activities like maintaining posture.


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