Muscle Review

Front

What is the Z line in muscle structure?

Back

The Z line is a structure in the sarcomere that defines the boundaries of each sarcomere and anchors the thin filaments (actin).

Front

What does Actin represent in muscle fibers?

Back

Actin is a thin filament that plays a crucial role in muscle contraction by interacting with myosin.

Front

What is the function of Myosin in muscle contraction?

Back

Myosin is a thick filament that interacts with actin to produce muscle contraction through the sliding filament mechanism.

Front

What is a Sarcomere?

Back

A sarcomere is the basic contractile unit of muscle tissue, composed of actin and myosin filaments.

Front

What is the Perimysium?

Back

The perimysium is the connective tissue sheath that surrounds a fascicle, which is a bundle of muscle fibers.

Front

What is the Endomysium?

Back

The endomysium is the connective tissue that surrounds individual muscle fibers, providing support and insulation.

Front

What is the Epimysium?

Back

The epimysium is the outermost layer of connective tissue that surrounds the entire muscle.

Front

Where is Smooth Muscle found in the body?

Back

Smooth muscle is found in the walls of hollow organs, such as the digestive system, blood vessels, and the bladder.

Front

What is the difference between Skeletal Muscle and Smooth Muscle?

Back

Skeletal muscle is striated and under voluntary control, while smooth muscle is non-striated and involuntary.

Front

What role does the Sarcoplasmic Reticulum play in muscle contraction?

Back

The sarcoplasmic reticulum stores calcium ions, which are released to trigger muscle contraction.