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

Why does a sarcomere itself appear to be banded, and what constituents comprise these bands?

What type of muscular activity is present in a muscle at rest?

When all of the motor units of a muscle contract at the maximal rate of stimulation, it leads to the production of ________.

The neurotransmitter involved in the process of contraction in skeletal muscles is ________.

Why are skeletal muscles called voluntary?

The sarcoplasmic reticulum conducts action potentials that spread across the sarcolemma into the cell.

In muscles that have been repeatedly stimulated to produce near-maximal tension, the net effect is ________.

Regarding the effect of sarcomere length on tension production, a very highly stretched muscle (increased sarcomere length above normal 3.1 µm)will produce a contraction (% maximum tension)that is ________.

Which of the following words means slender?

Slow muscle fibers contain large amounts of the oxygen-binding protein ________.

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 B.

What does the term longissimus in a muscle name primarily indicate about that muscle?

What characteristic of muscle tissue allows it to respond to stimulation by the nervous system?

When contraction occurs, ________.

What does the name flexor carpi radialis most likely mean?

The sarcoplasmic reticulum is (the)________.

Tropomyosin and troponin are which of the following types of molecules?

Each skeletal muscle fiber is controlled by a single ________.

The structures within the muscle fiber that shorten to cause skeletal muscle fiber contraction are (the)________.

A muscle that opposes the action of a prime mover is a synergist.