What are the muscles of the human back: Extrinsic (superficial), intermediate, & intrinsic (deep) muscles in upper & lower back with function & labeled diagram

Muscles in your back help you move other parts of your body too, including your: Head. Neck. Shoulders. Arms. Legs. Your back muscles work together to allow you to bend over, twist, turn …

Jan 16, 2025 · The Muscles of the Back: Anatomy and Function | Explore the different layers of the back muscles and their individual roles.

There are three major groups of back muscles: These groups serve to allow: flexion/extension, rotation, and side bending of the back; movement of the limbs; locomotor function; and …

The muscles of back (dorsal muscles) include: True back muscles are innervated by the dorsal rami of spinal nerves, whereas the muscles of the shoulder girdle are not.

Oct 21, 2025 · Your back muscles support your spine, attach your pelvis and shoulders to your trunk, and provide mobility and stability to your trunk and spine. The five major muscles of the …

Topics include the superficial muscles, which connect the upper limb to the trunk; the intermediate muscles, involved in respiratory movement; and the deep muscles, which stabilise and move …

Dec 15, 2025 · The back is composed of several muscles of varying sizes and functions, which are grouped into intrinsic (or primary) back muscles and extrinsic (or secondary) back …

occipital a. supplied segmentally by: deep cervical a., posterior intercostal aa., subcostal aa., lumbar aa.

Nov 3, 2023 · These muscles are divided into superficial and intermediate. The intrinsic (deep) back muscles, which are also called true back muscles. They are located deep to the extrinsic …