Fast Fibers

question 11

Multiple Choice

Fast fibers

• A) have high resistance to fatigue.
• B) have a high concentration of myoglobin.
• C) have many mitochondria.
• D) contract quickly.
• E) all of the above

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Definitions:

Curare

A plant extract used by South American indigenous peoples on arrows and darts for hunting, which acts as a muscle relaxant by blocking neurotransmission.

Physostigmine

Physostigmine is a reversible cholinesterase inhibitor used medically to increase acetylcholine levels in the treatment of certain disorders, such as glaucoma and myasthenia gravis.

Poison Arrowheads

Historical weapons used for hunting and warfare, often coated with natural toxins to incapacitate or kill the target.

Acetylcholine

A neurotransmitter involved in many functions including muscle activation, memory, and learning.