Muscle Intro Roman Numerals I - IV

Front

What is Actin?

Back

Actin is a protein that forms microfilaments and is involved in muscle contraction and cell movement.

Front

What type of muscle tissue is characterized by striations and voluntary control?

Back

Skeletal muscle tissue.

Front

What is the correct order of muscle structure from largest to smallest?

Back

Fascicle, muscle fiber, myofibril, myofilament.

Front

What does the H Zone represent in a sarcomere?

Back

The H Zone is the region in the center of the A Band where there is no overlap of actin and myosin filaments.

Front

What type of muscle tissue is found in the heart?

Back

Cardiac muscle tissue.

Front

What is the primary function of myosin in muscle contraction?

Back

Myosin is a motor protein that interacts with actin to produce muscle contraction.

Front

What is the role of Titin in muscle fibers?

Back

Titin is a protein that helps maintain the structure and elasticity of muscle fibers.

Front

What is a myofibril?

Back

A myofibril is a long, thread-like structure found in muscle fibers, composed of repeating units called sarcomeres.

Front

What is the I Band in a sarcomere?

Back

The I Band is the region of a sarcomere that contains only actin filaments.

Front

What is the A Band in a sarcomere?

Back

The A Band is the region that contains both actin and myosin filaments.