Muscle Contraction Is Directly Caused by

question 32

Multiple Choice

Muscle contraction is directly caused by

• A)structural changes in actin.
• B)structural changes in myosin.
• C)thick and thin filaments sliding past each other.
• D)structural changes in the Z disk.
• E)None of the above is correct.

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Definitions:

Stimulant

A substance that raises levels of physiological or nervous activity in the body.

Opiate

Refers to a group of drugs derived from opium used for their analgesic, sedative properties, and can lead to addiction.

Endorphins

Natural chemicals produced in the brain that act as painkillers and are associated with feelings of pleasure and euphoria.

Psychoactive Drugs

Substances that alter brain function, resulting in temporary changes in perception, mood, consciousness, and behavior.