Exam 9: The Muscular System: Skeletal Muscle Tissue and Muscle Organization

Figure 9.1 Using the diagrams of the structural organization of skeletal muscle, identify the specified labeled part in each of the following questions. -Identify the specific structure indicated by Label U.

Figure 9.2 Using the diagram of a sarcomere, identify the specified labeled part in each of the following questions. -Identify the specific structure indicated by Label F.

Figure 9.1 Using the diagrams of the structural organization of skeletal muscle, identify the specified labeled part in each of the following questions. -Identify the specific structure indicated by Label E.

Figure 9.1 Using the diagrams of the structural organization of skeletal muscle, identify the specified labeled part in each of the following questions. -Identify the specific structure indicated by Label W.

The M line is located at the end of a sarcomere.

Which of the following events occurs in a muscle that is relaxing?

The Z line is comprised of thick filaments attached to interconnecting proteins, delineating the ends of the sarcomere.

Why does a skeletal muscle fiber have more than one nucleus?

Figure 9.4 Using the above-referenced figures depicting skeletal muscle fiber organization, identify the specific labeled part indicated in each of the following questions. -Identify the specific structure indicated by Label H.

The complex known as the triad consists of ________.

Figure 9.3 Using the diagrams depicting different views of the neuromuscular synapse, identify the specified labeled part in each of the following questions. -Identify the specific structure indicated by Label C.

Smooth muscles are primarily used to ________.

The function of T tubules is to ________.

Slow muscle fibers ________.

When acetylcholine binds to receptors on the motor end plate, ________ occurs immediately.

Light staining areas of a muscle fiber viewed under polarized light are called I bands.

Which of the following molecules or ions are absent following death and leads to rigor mortis?

What is the significance of the change in membrane potential of the T tubules within the sarcolemma?

The motor neuron releases acetylcholine, which then binds to receptors sites on a special region of the sarcolemma called ________.

When a resting muscle contracts only enough to produce tension without movement, this is an example of ________.