Which of the Following Events Occurs During the Lag Phase

question 69

Multiple Choice

Which of the following events occurs during the lag phase of a muscle twitch?

• A) Muscle fibers shorten.
• B) Cross-bridges form, move, release, and reform many times.
• C) The action potential is propagated from presynaptic to postsynaptic membrane.
• D) Ca²⁺ are pumped back into the sarcoplasmic reticulum.
• E) All of these events occur in the lag phase.

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Definitions:

Perimeter

The total length of the sides of a geometric figure, such as a triangle, square, or rectangle.

Rectangle

A quadrilateral with four right angles, often used in geometry and graphical applications.

Looping Mechanism

A programming construct that repeats a block of code multiple times based on a specified condition.

For Each

A loop construct used to iterate over elements in a collection or array, typically without needing to use indices.