Upper Back Muscle Anatomy. Rhomboids two muscles that connect the scapula to the spine. The intrinsic or deep muscles are those muscles that fuse with the vertebral column.
It is very stiff and the thoracic spine has a limited range of motion. Back muscles anatomy here include the Trapezius Latissimus Dorsi Rhomboid and Levator Scapulae. This muscle is activated when you bring your shoulder blades together or try to squeeze them into each other.
They originate at the humerusthe upper arm boneand connect to the scapula the lower thoracic spine and to the thoracolumbar fascia the membrane covering the deep muscles of the back.
Muscles make up a large part of the anatomy structure of the back. Serratus posterior superior and serratus posterior inferior muscles. Back muscles anatomy here include the Trapezius Latissimus Dorsi Rhomboid and Levator Scapulae. The final group is the intermediate muscles which help with the movement of the thoracic cage.
