Ch 6 Musclular System Test

Which term does NOT describe smooth muscle cells?

• Skeletal

• nonstriated

• visceral

• InvoluntaryCh 6 Skele

The type of muscle shown is this image is ______.

What organelle wraps and surrounds the myofibril and stores calcium?

• sarcolemma

• cross bridge

• sarcomere

• sarcoplasmic reticulum

Muscle tissue has the ability to shorten when adequately stimulated, a characteristic known as ________.

• extensibility

• contractibility

• irritability

• elasticity

One neuron and all the skeletal muscles it stimulates is known as a ________.

• Motor Unit

• Synaptic Cleft

• sarcoplasmic reticulum

• neuromuscular junction

Striated involuntary muscle tissue found in the heart is ________.

• cardiac

• skeletal

• smooth

• dense regular

What is covered by the endomysium?

• an individual muscle cell

• myofibrils

• an entire muscle

• fascicles of muscle cells

The plasma membrane of a skeletal muscle cell is called the ________.

• sarcomere

• sarcoplasmic reticulum

• sarcolemma

• sarcoplasm

• myofilament

What creates the alternating light and dark bands that provides the striation pattern on skeletal muscle tissue?

• A bands and I bands

• sarcoplasm and sarcolemma

• thick filaments and myosin heads

• H zones and M lines

• Z discs and H zones

_______ muscle contracts most quickly upon stimulation?