Motor Units That Include Type IIb Fibers

question 94

Multiple Choice

 Motor units that include Type IIb fibers

• A) usually include Type IIa fibers as well.
• B) produce about 100 times the force as units that include Type I fibers.
• C) produce about one-third of the force produced by units that include Type IIa fibers.
• D) are rarely found in humans.

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Definitions:

Phineas Gage

An individual famously studied in neuroscience whose personality changes after a traumatic brain injury helped advance understanding of brain function.

Motor Cortex

An area of the cerebral cortex responsible for devising, managing, and carrying out voluntary muscle movements.

Movement

The act or process of moving or being moved, encompassing physical and symbolic motion.

Motor Cortex

A segment of the cerebral cortex tasked with the formulation, governance, and completion of intentional movements.