Exam 12: Muscle: Mechanisms of Contraction and Neural Control

What protein primarily makes up the thin filament?

A reserve of high energy phosphate is stored in muscle as

The ______________ reflex prevents excessive muscle contraction.

Myosin will not bind to actin unless ADP is bound to the myosin head.

Muscle spasms can be avoided by stretching slowly,which stimulates mainly the primary,annulospiral sensory endings.

Fatty acids provide the majority of the energy for muscle metabolism when a person is

Which of the following is NOT true of the relaxation of a muscle fiber?

Increasing the frequency of action potentials in a somatic motor neuron will induce increased force of muscle contraction.

The inhibition of an antagonistic muscle so that the agonist can do the intended movement is due to

Random uncontrolled contractions of different muscle groups as a result of damage to the basal nuclei is a symptom of upper motor neuron damage called

Which molecule blocks the myosin head from binding to actin in a relaxed muscle?

Damage to upper motor neurons would be indicated by all of the following except

What condition of smooth muscle allows it to maintain contraction for long periods of time?

The more movable bony attachment is the

Which of the following does NOT increase the strength of the muscle contraction?

An individual suffering damage to the basal nuclei resulting in a lack of desire to use a limb would be suffering from

A muscle that constricts an opening is a/an

Central fatigue is caused by

The cerebellar influence on motor activity is excitatory.