Exam 12: Muscle: Mechanisms of Contraction and Neural Control

What is the lighter area in the center of the A-band called?

What structure runs the length of the sarcomere and contributes to the elastic recoil in muscle?

Which of the following is NOT true of slow oxidative/Type I red muscle fibers?

During skeletal muscle contraction,

The fastest shortening muscle fiber in humans is the

The thick filament is also called the

________ is characterized by continued attachment of myosin heads to actin filaments due to a lack of ATP.

The deadly botulinum toxin can be used in the cosmetic treatment of skin wrinkles because it produces a flaccid paralysis.

Myosin contains binding sites for ______________ and _____________.

Which of the following molecules is NOT part of the thin filament?

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

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

Transverse tubules contain voltage-gated calcium channels that respond to membrane depolarization and are directly coupled to the calcium release channels in the sarcoplasmic reticulum.

The epimysium surrounds the individual muscle cells.

The light band of a skeletal muscle is known as the

Coactivation of alpha and gamma motoneurons is stimulated by ______________ neurons.

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

Muscle repair is due to ____ forming myotubes that fuse to form new muscle fibers.

Primary,annulospiral endings are found associated with

The muscle spindle apparatus is associated with