Which Structure Is the Contractile Subunit of the Myofibril

question 27

Multiple Choice

Which structure is the contractile subunit of the myofibril?

• A) Sarcoplasmic reticulum
• B) Actin
• C) Motor endplate
• D) Sarcomere

---

Definitions:

Indirect

A method or approach that is not straightforward or direct, often involving secondary or alternative means to achieve an end.

Evasion

The act of avoiding something undesired, such as responsibilities, questions, or physical obstacles, often through skill or deceit.

Bilateral

Involving two sides or parties, often referring to agreements, communications, or relationships that involve direct interaction between two individuals or groups.

Persuasion

The act or process of influencing someone's thoughts, beliefs, or actions through argument, reasoning, or appeal.