Exam 12: Muscle: Mechanisms of Contraction and Neural Control

Clonus is a flapping motion caused by alternate activation of antagonistic stretch reflexes.

Which of the following is true of fast oxidative,Type IIA muscle fibers?

The thick filament is split by a Z disc.

The prime mover of any skeletal movement is called the

Which of the following is NOT true of single-unit smooth muscle?

Parkinson's disease involves degeneration of nerve fibers from the

Regulation of motor neurons involves the actions of the basal nuclei and cerebellum.

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

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

The thick filament is also called the

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

The pyramidal tracts include the __________ and _____________ tracts.

Skeletal muscles with a low innervation ratio have a low degree of neural control.

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

Which of the following is true for the first 30 minutes of heavy exercise?

What protein primarily makes up the thin filament?

What is the role of ATP in muscle contraction and relaxation?

What are the swellings on autonomic nerves that release neurotransmitter to smooth muscle called?

The cerebellar influence on motor activity is excitatory.

What structure is composed of protein filaments and is located in the center of the thick filaments?