Introduction to Anatomy of Skeletal Muscle

Front

What is the name for the connective tissue that surrounds each individual muscle fiber?

Back

Endomysium

Front

What is another name for a muscle cell?

Back

Muscle fiber

Front

Are skeletal muscles under voluntary or involuntary control?

Back

Voluntary

Front

Which of the following describes the repeating unit of a myofibril that spans from one Z-line to the next Z-line?

Back

Sarcomere

Front

What is another name for thick and thin filaments?

Back

Actin and Myosin

Front

What is the connective tissue that surrounds a group of muscle fibers called?

Back

Perimysium

Front

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

Back

Epimysium

Front

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

Back

Actin (thin) and Myosin (thick)

Front

What is the functional unit of muscle contraction?

Back

Sarcomere

Front

What is the role of calcium ions in muscle contraction?

Back

Calcium ions bind to troponin, causing tropomyosin to move and expose binding sites on actin.