Exam 12: Muscle: Mechanisms of Contraction and Neural Control

The first 1 to 2 minutes of moderate to heavy exercise relies on _____ for ATP production.

Each somatic motor neuron with all the muscle fibers it innervates is a

Gap junctions have only been identified in cardiac muscle.

The actin filament is a polymer formed from 300 to 400 globular subunits called

Type I skeletal muscle fibers

Smooth muscle cells

Exceeding the VO_2max will result in lactate production by the muscle.

The prime mover of any skeletal movement is called the

The monosynaptic stretch reflex involves the actions of the muscle spindles.

Fatigue appears to occur due to the reduced ability of the sarcoplasmic reticulum release of Ca²⁺ with neural stimulation.

The stretch reflex is enhanced in response to activation of

The fastest shortening muscle fiber in humans is the

A muscle contraction against a resistance that is greater than the force and causes muscle lengthening is a(n)

Muscle hypertrophy is due to

In smooth muscle cells,______________ functions in a manner analogous to troponin.

Primary,annulospiral endings are found associated with

The light band of a skeletal muscle is known as the

A crossed-extensor reflex demonstrates double reciprocal innervation.

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

When a muscle is stimulated to contract,calcium release channels in the SR will release Ca²⁺ by