Examlex
What is a noncoding stretch of DNA that controls the spatial and temporal expression of nearby genes on the same strand?
Motor Units
A motor unit consists of a single motor neuron and all the muscle fibers it innervates, essential for muscle contraction.
All Or None
A principle stating that a neuron either fires with a full response or does not fire at all, depending on stimulus strength.
Contraction
The process in which a muscle becomes shorter and tighter, producing movement or exerting force.
Single Muscle Contraction
The process by which a muscle fiber receives a nerve impulse and momentarily contracts or shortens.
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