Muscle anatomy

Front

What is the function of myosin in muscle contraction?

Back

Myosin is a motor protein that interacts with actin to facilitate muscle contraction through the sliding filament model.

Front

What is the epimysium?

Back

The epimysium is a layer of connective tissue that surrounds the entire muscle, providing structure and support.

Front

What is the function of actin in muscle contraction?

Back

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

Front

What type of muscle tissue is skeletal muscle?

Back

Skeletal muscle is a type of striated muscle tissue that is under voluntary control.

Front

What is a tendon?

Back

A tendon is a cord-like extension of connective tissue that attaches muscle to bone.

Front

What are myofibrils?

Back

Myofibrils are long, thread-like structures within muscle fibers that contain the contractile proteins actin and myosin.

Front

What is the sarcomere?

Back

The sarcomere is the basic functional unit of a muscle fiber, defined by the area between two Z lines.

Front

What is the role of the endomysium?

Back

The endomysium is a thin layer of connective tissue that surrounds each muscle fiber, providing support and insulation.

Front

What is the difference between voluntary and involuntary muscle?

Back

Voluntary muscles are under conscious control (e.g., skeletal muscles), while involuntary muscles operate without conscious control (e.g., smooth and cardiac muscles).

Front

What is the function of cardiac muscle?

Back

Cardiac muscle is responsible for pumping blood throughout the body and is found only in the heart.