4. Tissues & Histology

What is the most distinguishing characteristic of muscle tissue?

Which structure in a myofibril is responsible for storing and releasing calcium ions during muscle contraction?

The deltoid muscle fibers are separated into __________.

Which organelle completely surrounds each myofibril inside a muscle fiber?

Which of the following best describes the location and movement of involuntary muscles?

When a skeletal muscle fiber is at rest, its ATP demands are met by which of the following processes?

What is the major source of energy for muscles during short, intense exercise?

Which statement best describes myofibrils in muscle tissue?

Why are skeletal and cardiac muscles striated?

Which of the following is false with respect to muscle tissue?

In the context of skeletal muscle tissue, which structure in a typical diagram corresponds to a single skeletal muscle cell?

Which of the following structures stores calcium within a muscle fiber?

Which muscle cell structure stores calcium ions that are used to trigger contraction?

A nurse is caring for a client experiencing muscle fasciculations. Fasciculations appear as:

Which selection correctly describes the role of calcium in signal transduction during cell communication?