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

Question

Quizplus · Accepted Answer

The erector spinae muscle group is the primary mover for spinal extension and controls the rate of spinal flexion against gravity through eccentric contractions. It is composed of the iliocostalis, longissimus, and spinalis muscles.

What Is the Muscle Group That Is the Primary Mover