Muscle Relaxant Effects of Botulinum Toxin Appear to Diminish or Wear

question 1

Multiple Choice

Muscle relaxant effects of botulinum toxin appear to diminish or wear off after several months because:

• A)the immune system destroys the toxin.
• B)the muscle hypertrophies and generates more muscle fibers.
• C)a new presynaptic terminal "sprouts" from the axon that was originally affected by the toxin.
• D)the liver metabolizes the toxin.
• E)the toxin is excreted intact in the urine.

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Definitions:

Distributed Practice

A learning strategy that involves spreading study sessions out over time, which has been shown to improve long-term memory retention.

Procedural Memory

Pertains to a type of long-term memory that enables individuals to remember how to perform tasks or procedures, such as riding a bike or typing on a keyboard, without conscious awareness.

Implicit Memory

A type of memory that is retained without conscious thought or recall, typically involving skills and routines that are performed automatically.

Nondeclarative Memory

A type of long-term memory including procedural memory and habits that operate on an unconscious level.