chapter 10 anatomy

Front

What is the term for the capacity to stretch to its normal resting length and beyond after contracting?

Back

Extensibility

Front

What type of muscle contraction does not change the size of the muscle?

Back

Isometric contractions

Front

What is the muscle type that is white in color and large in size?

Back

Type IIB

Front

In which lever class do the muscle force and resistive force act on the same side of the fulcrum, with the muscle force acting through a moment arm shorter than that of the resistive force?

Back

Third class lever

Front

In which lever class do the muscle force and resistive force act on the same side of the fulcrum, with the muscle force acting through a moment arm longer than that of the resistive force?

Back

Second class lever

Front

What is the primary function of skeletal muscle?

Back

To facilitate movement by contracting and exerting force on bones.

Front

What is the difference between Type I and Type IIB muscle fibers?

Back

Type I fibers are slow-twitch, endurance-oriented, and red in color, while Type IIB fibers are fast-twitch, power-oriented, and white in color.

Front

What is the role of the fulcrum in a lever system?

Back

The fulcrum is the pivot point around which the lever rotates.

Front

What is the definition of a lever in the context of biomechanics?

Back

A lever is a rigid bar that rotates around a fulcrum to transmit force.

Front

What is the significance of moment arms in lever systems?

Back

Moment arms determine the mechanical advantage and efficiency of the lever system.