The Three Proteins Found to Make Up the Thin Filaments

question 19

Multiple Choice

The three proteins found to make up the thin filaments are actin, tropomyosin, and

• A) actin.
• B) sarcoplasmic reticulum.
• C) troponin.
• D) tropomyosin.
• E) transverse tubule.

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Definitions:

Habituation

Learned behavior in which the response to a stimulus weakens with repeated presentations.

Calcium Ion Influx

A cellular process involving the movement of calcium ions (Ca2+) into a cell, leading to various physiological responses.

Dopamine

A chemical messenger that plays a key role in regulating motivation, reward, and the control of movement.

Metabotropic Receptors

A type of receptor that, when activated, initiates a cascade of metabolic reactions within the cell to indirectly alter its electrical state, often involving G-proteins and second messengers.