Skeletal Muscle Structure Mini-Flashcard

Front

What are the bundles of proteins that run the length of the muscle fiber and are important in muscle contraction called?

Back

Actin and Myosin

Front

What is the protective sheath or layer called that covers a single muscle?

Back

Epimysium

Front

What is the gelatinous fluid inside the muscle fiber that contains glycogen and fats for energy?

Back

Sarcoplasm

Front

What is the network of tubules and channels where calcium is stored, important for muscle contraction?

Back

Sarcoplasmic reticulum

Front

What is the outermost layer of connective tissue surrounding a muscle called?

Back

Epimysium

Front

What is the term for the smallest functional unit of a muscle fiber?

Back

Sarcomere

Front

What are the two main types of protein filaments in muscle fibers?

Back

Actin and Myosin

Front

What is the role of the sarcoplasmic reticulum in muscle contraction?

Back

It stores and releases calcium ions.

Front

What is the term for the connective tissue that surrounds individual muscle fibers?

Back

Endomysium

Front

What is the term for the connective tissue that surrounds bundles of muscle fibers?

Back

Perimysium