4. Tissues & Histology

Each myofibril contains many ______, each extending from one Z line to the next.

Which of the following structures is responsible for the striated appearance in skeletal muscle fibers?

Which type of nerve fibers send impulses to skeletal muscles?

Which of the following muscles would have motor units with the smallest number of muscle cells?

Skeletal muscle maintains heat in the body by doing which of the following?

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: