Examlex
Which of the following is NOT an essential component of a reflex arc?
Myelin Sheath
A fatty covering that surrounds and insulates nerve fibers, speeding up the transmission of nerve impulses.
Neural Impulses
Electrical impulses moving through neurons that convey data across the nervous system.
Frequency
The rate at which a repeating event occurs over a set period, often measured in cycles per second or hertz in the context of waves or vibrations.
Threshold
The minimum level of stimulus intensity required for an individual to perceive a sensation or produce a response.
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