Muscle Anatomy Quick Check

Front

What is a fascicle?

Back

A fascicle is a bundle of muscle fibers (muscle cells) surrounded by perimysium.

Front

What is the epimysium?

Back

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

Front

What is the perimysium?

Back

The perimysium is a connective tissue that surrounds individual fascicles within a muscle.

Front

What is the endomysium?

Back

The endomysium is a thin connective tissue layer that surrounds each muscle fiber.

Front

What are muscle fibers?

Back

Muscle fibers are the individual cells that make up a muscle, capable of contracting.

Front

What is a myofibril?

Back

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

Front

What is the function of the sarcolemma?

Back

The sarcolemma is the cell membrane of a muscle fiber, responsible for conducting electrical impulses.

Front

What is fascia?

Back

Fascia is a sheet of connective tissue that surrounds muscles and groups of muscles.

Front

What is the role of connective tissue in muscles?

Back

Connective tissue provides support, protection, and structure to muscles, allowing for efficient movement.

Front

How do muscle fibers contract?

Back

Muscle fibers contract through the sliding filament theory, where actin and myosin filaments slide past each other.