Microscopic Anatomy of a Skeletal Muscle

Front

Z-Disc

Back

A structure in the sarcomere that anchors the thin filaments (actin) and defines the boundaries of a sarcomere.

Front

Which type of muscle tissue is both voluntary and striated?

Back

Skeletal muscle is the only type of muscle tissue that is both voluntary and striated.

Front

Connective tissue membrane that covers the entire muscle

Back

Epimysium is the connective tissue that surrounds the entire muscle.

Front

The basic contractile unit of skeletal muscle

Back

A sarcomere is the basic contractile unit of skeletal muscle, consisting of actin and myosin filaments.

Front

A bundle of muscle fibers

Back

A fascicle is a bundle of muscle fibers.

Front

What is the role of myofilaments in muscle contraction?

Back

Myofilaments (actin and myosin) interact to produce muscle contraction through the sliding filament mechanism.

Front

What is the function of the sarcolemma?

Back

The sarcolemma is the cell membrane of a muscle fiber that conducts electrical impulses.

Front

What is the difference between skeletal and cardiac muscle?

Back

Skeletal muscle is voluntary and striated, while cardiac muscle is involuntary and striated.

Front

What is the function of the perimysium?

Back

The perimysium is a connective tissue that surrounds fascicles, providing support and protection.

Front

What is the role of the endomysium?

Back

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