The Structure of the Contractile Subunit of the Myofibril Is

question 23

Multiple Choice

The structure of the contractile subunit of the myofibril is called the:

• A) sarcoplasmic reticulum.
• B) actin.
• C) motor end plate.
• D) sarcomere.

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Definitions:

Concrete Operational Stage

A stage in Piaget's theory of cognitive development where children between ages 7 and 11 develop logical thinking but are not yet capable of abstract thought.

Cognitive Development

The process through which a person's thinking and reasoning abilities evolve and mature over time, often studied in the context of child development.

Hypothetical Thinking

The ability to consider multiple possibilities and outcomes of situations that are not necessarily rooted in current reality.

Formal Operational Stage

The stage in Piaget's theory of cognitive development (beginning around age 12) where individuals develop the ability to think abstractly, reason logically, and plan systematically.