Exam 17: Muscle Contraction

In visceral smooth muscle, gap junctions join individual smooth muscle fibers into large, continuous sheets.

Which of the following is not one of the major functions of muscles?

Tonic contractions give the muscle its muscle tone.

Muscle contractions will continue as long as:

The aerobic catabolic pathway that can supply energy to muscle cells is called fermentation.

All of the following are true characteristics of an isometric contraction except:

Smooth muscle can contract to shorter lengths than skeletal muscles.

The more precise the muscle movement, the greater the number of muscle fibers activated by a motor neuron.

The striations seen in skeletal muscle cells under the microscope are what part of the sarcomere?

A neuromuscular junction is a type of connection called a synapse.

Which of the following statements is incorrect regarding muscle tone?

Rigor mortis occurs because of damage done to the sarcolemma after death.

Hemoglobin carries oxygen in red blood cells, and myoglobin stores oxygen in muscle fibers.

Muscle fibers of skeletal muscle contain several nuclei.

The myofibrils contain about how many sarcomeres?

A satellite cell can fuse with myocytes during strength training to make larger muscle fibers.

The ability of muscle cells to respond to nerve stimuli is called:

_____ muscle is also known as striated muscle.

A sarcomere is a segment of myofibril between two successive:

Because the process of catabolism is less than 100% efficient, some of the energy is given off as heat.