4. Tissues & Histology

Which protein interacts with actin to produce movement in muscle contraction?

When the sarcomere is at rest, which of the following best describes the position of the myosin-binding sites on actin filaments?

At rest, the tropomyosin molecule is held in place by which of the following proteins?

Which of the following best describes a key physiological characteristic of skeletal muscle tissue?

Which of these is an autoimmune disease that affects muscle contraction?

What is the name for the many parallel threads that make up a single muscle fiber?

Which muscle is characterized by a parallel fascicle orientation?

Muscle fibers are arranged in bundles called:

Which of the following best describes a bipennate pattern of fascicles in muscle tissue?

The region of the sarcomere that contains both actin and myosin myofilaments is called the:

Which term refers to an abnormal condition of skeletal muscles?

During which phase of a muscle twitch does calcium bind to troponin, initiating cross-bridge formation?

What are the folds in the sarcolemma at the neuromuscular junction called?

Which of the following correctly lists the sequence of events during the excitation of a skeletal muscle fiber?