Which of the Following Statements Are True of Electrical Changes

question 4

Multiple Choice

Which of the following statements are true of electrical changes at the sarcolemma (Select all that apply)

• A)A polarized muscle fiber has more Na+ ions inside that outside.
• B)Depolarization is the movement of K+ ions into the cell.
• C)Repolarization is the movement of Na+ ions out of the cell.
• D)A polarized muscle fiber has a positive charge inside and a negative charge outside.
• E)Depolarization is a reversal of charges; the cell has a positive charge outside and a negative charge inside.
• F)An action potential is depolarization followed by repolarization.

---

Definitions:

Theory

A set of principles or explanations that accounts for a phenomenon, predicting or explaining its nature and relationship with other phenomena.

Research Idea

The initial concept, theory, or question that drives the formulation and execution of a research project, often leading to the development of hypotheses and study design.

Original Contribution

A unique addition to the body of knowledge in a particular field, often a requirement for academic research, indicating new perspectives, findings, or interpretations.

Constructs

Abstract concepts or theoretical entities that are deliberately created for scientific purposes to describe, explain, or theorize about phenomena.