Unformatted text preview: ross motor e.g., the gastrocnemius 3
! size principle-- motor untis are recruted by order of their size Size Principle from smallest to largest.
Motor units are
recruited in the order
of their size, from
smallest to largest. Up to a moderate level,
more MU’s are
recruited, then they are
fired more frequently. Perspectives in Motor Control three types of ﬁbers..
type 1--this ﬁrst least easily fatigued
type 2a--then this
type 2B--this last most easily fatigued NP-what we have been talking about Neurophysiological Perspective The subsystems through which the nervous system
(central and peripheral) controls and coordinates the
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- Fall '08
- Motor unit