Which subgroup of the erector spinae group is the most lateral?

Name: Which subgroup of the erector spinae group is the most lateral?
Brand: Quizplus
Rating: 4.8 (49 reviews)

Question

Quizplus · Accepted Answer

The iliocostalis muscle is the most lateral subgroup of the erector spinae group, as it originates from the posterior iliac crest and inserts onto the ribs. The longissimus and spinalis muscles are more medial, while the semispinalis muscles are deeper and not considered part of the erector spinae group.

Which Subgroup of the Erector Spinae Group Is the Most