Exceptions to the Size Principle Exist During the Performance of High

question 17

Multiple Choice

Exceptions to the size principle exist during the performance of high intensity and short duration exercise.This recruitment of fast motor units before activation of slow fibers can be achieved by

• A)activation of the sympathetic nervous system.
• B)inhibiting the activation of slow motor units.
• C)reflex action by the Golgi tendon organ.
• D)all of the above answers are correct

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Definitions:

Myelin

A fatty substance that surrounds and insulates the axons of many neurons, facilitating the rapid transmission of electrical impulses.

Reticular Formation

An extensive network of neurons located in the brainstem, playing a key role in controlling arousal, attention, and sleep-wake cycles.

Thalamus

A part of the brain located in the forebrain that functions as a relay station, processing and transmitting information from the sensory organs to the cerebral cortex.

Sensory Information

The data received by the senses such as sight, hearing, smell, taste, and touch, which is then interpreted by the brain.