Anatomy & Physiology Chapter 6: The Muscular System

Front

What is the end of a muscle attached to the bone that moves when the muscle contracts?

Back

Insertion

Front

True or False: Skeletal muscle is a result from stretching a muscle too far, causing some of the fibers to tear apart.

Back

False

Front

True or False: Slow-twitch fibers are muscle fibers that break down ATP quickly, so they can contract quickly.

Back

False

Front

What is the mechanism of muscle contraction?

Back

Sliding filament mechanism

Front

What is the condition of feeling tired or weary?

Back

Fatigue

Front

What are the two main types of muscle fibers?

Back

Slow-twitch and fast-twitch fibers.

Front

What is the primary function of skeletal muscle?

Back

To facilitate movement of the skeleton.

Front

What is the role of actin in muscle contraction?

Back

Actin is a protein that forms thin filaments and interacts with myosin to enable muscle contraction.

Front

What is the role of myosin in muscle contraction?

Back

Myosin is a protein that forms thick filaments and interacts with actin to enable muscle contraction.

Front

What is fatigue in the context of muscle physiology?

Back

Fatigue is the decline in ability of a muscle to generate force.