Chapter 9 Muscle Tissue Vocabulary Quiz Review

A genetic disorder that causes atrophy or the breakdown of muscle.

• myofilament

• Muscular Dystrophy

• fascicle

• synaptic cleft

This is the electrical current caused by a muscle fiber contraction which increases calcium ion levels.

• synaptic cleft

• period of relaxation

• action potential

• latent period

This is a motor neuron and all the muscle fibers it supplies.

• motor unit

• fascicle

• muscle tension

• myofilament

A muscle that is not under your conscious control.

• voluntary muscle

• involuntary muscle

• muscle fatigue

• muscle tone

A muscle contraction that you do control

• involuntary muscle

• voluntary muscle

• action potential

• muscle tone

The region of a myofibril between 2 successive Z bands.

• sarcomere

• fascicle

• synaptic cleft

• motor unit

Actin and myosin are these structures

• motor unit

• fascicle

• synaptic cleft

• myofilament

These are bundles of muscle fibers.

• sarcomere

• fascicle

• myofilament

• motor unit

A type of contraction where muscle length changes

• eccentric contraction

• concentric contraction

• isotonic contraction

• isometric contraction

An isotonic contraction where the muscle shortens and does work

• isotonic contraction

• isometric contraction

• eccentric contraction

• concentric contraction