Layers of the Back Muscles List (Superficial back LG 4,5,6)

Question 1

What are the extrinsic superficial back muscles and what purpose do they serve?

Answer 1

Axioappendicular: Trapezius, Latissimus Dorsi, Levator Scapulae, and Rhomboids
Provide the purpose of limb movement.

Question 2

What are the extrinsic intermediate back muscles and what purpose do they serve?

Answer 2

They are the Serratus posterior superior and Serratus posterior inferior back muscles
Purpose is to aid in respiration (Superior lift ribs, inferior depress ribs) and proprioception

Question 3

What are the superficial intrinsic back muscles and what purpose do they serve?

Answer 3

They are the Capitis Splenius and the Cervicis Splenius
Purpose is vertebral column movement and stabilization

Question 4

What are the intermediate intrinsic back muscles and what purpose do they serve?

Answer 4

(lateral to medial) Erector spinae iliocostalis, Erector spinae longissimus, and Erector spinae iliocostalis
Purpose is vertebral column movement and stabilization

Question 5

What are the deep intrinsic back muscles and what purpose do they serve?

Answer 5

Semispinalis capitis, Multifidus, and Rotatores
Purpose is vertebral column movement, and stabilization