From lateral to medial, which muscles comprise the group commonly remembered as I Love Spaghetti?

From lateral to medial, which muscles comprise the group commonly remembered as I Love Spaghetti?

• A. Iliocostalis, Longissimus, Spinalis
• B. Spinalis, Longissimus, Iliocostalis
• C. Iliocostalis, Spinalis, Longissimus
• D. Longissimus, Iliocostalis, Spinalis

Answer: (A)

The idea being tested is the lateral-to-medial arrangement of the erector spinae muscles. Going from the outside of the back toward the midline, the three columns appear in this order: Iliocostalis (lateral), Longissimus (middle), Spinalis (medial). The mnemonic “I Love Spaghetti” maps directly to those initials, so the group described by that phrase, in the correct lateral-to-medial sequence, is Iliocostalis, Longissimus, Spinalis. These muscles run along the spine to extend and stabilize the vertebral column, with each part spanning different regions but sharing that primary action; they are innervated by the dorsal rami of the spinal nerves.

The idea being tested is the lateral-to-medial arrangement of the erector spinae muscles. Going from the outside of the back toward the midline, the three columns appear in this order: Iliocostalis (lateral), Longissimus (middle), Spinalis (medial). The mnemonic “I Love Spaghetti” maps directly to those initials, so the group described by that phrase, in the correct lateral-to-medial sequence, is Iliocostalis, Longissimus, Spinalis. These muscles run along the spine to extend and stabilize the vertebral column, with each part spanning different regions but sharing that primary action; they are innervated by the dorsal rami of the spinal nerves.