Skeletal Muscle FLASHCARD 1 REVIEW

Front

What must occur first before a muscle can contract?

Back

An action potential must be sent through neurons in the nervous system.

Front

What is the connective tissue that encases the entire muscle?

Back

Epimysium.

Front

What state is the sarcomere in when it is relaxed?

Back

Relaxed.

Front

What covers bundles of cells (fascicles) within the muscle?

Back

Perimysium.

Front

What zone/band of the sarcomere is represented by yellow?

Back

I Zone/Band.

Front

What is the basic functional unit of a muscle fiber?

Back

Sarcomere.

Front

What protein is primarily responsible for muscle contraction?

Back

Myosin.

Front

What is the role of actin in muscle contraction?

Back

Actin provides a site for myosin to bind and pull, facilitating contraction.

Front

What is the term for the muscle cell membrane?

Back

Sarcolemma.

Front

What is the fluid that fills the space between myofibrils in muscle cells?

Back

Sarcoplasm.