What Is the Muscle Group That Is the Primary Mover

question 33

Multiple Choice

What is the muscle group that is the primary mover for spinal extension and controls the rate of spinal flexion against gravity through eccentric contractions?

• A) Erector spinae
• B) Transversospinal
• C) Iliocostalis
• D) Longissimus

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Definitions:

Buffers

Substances that minimize changes in pH by absorbing or releasing hydrogen ions, thus maintaining a stable environment in solutions, especially in biological systems.

Hydrogen Bonds

Weak bonds between partially positive hydrogen atoms and partially negative atoms (like oxygen or nitrogen) in different molecules or within the same molecule.

pH Solution

A measure of the acidity or alkalinity of a solution, on a scale of 0 to 14, where 7 is neutral, values below 7 are acidic, and values above 7 are alkaline.

Ions

Atoms or molecules with a net electric charge due to the loss or gain of one or more electrons.