Which of These Causes Cognitive Impairment and Therefore Helps Explain

question 20

Multiple Choice

Which of these causes cognitive impairment and therefore helps explain the cycle of low socioeconomic mobility in exposed groups?

• A) environmental contaminants (e.g., PCBs)
• B) 'Parasite stress'
• C) a high disease burden from bacteria, viruses, etc.
• D) Lack of iodine (cheap salt)
• E) Everything listed can impair cognitive skills

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Definitions:

Muscle Fibers

Muscle fibers are the individual contractile units of muscle tissue, made up of myofibrils and encapsulated in a sarcolemma, that facilitate body movements through contraction and relaxation.

Skeletal Muscle

A type of striated muscle tissue attached to bones, responsible for voluntary movements of the body.

Motor Neurons

Nerve cells that originate in the brain or spinal cord and transmit signals to muscles, inducing movement.

Motor Unit Recruitment

Motor unit recruitment involves the activation of additional motor units to increase the strength of a muscular contraction.