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3 Νοε 2023 · It comprises the vertebral column (spine) and two compartments of back muscles; extrinsic and intrinsic. The back functions are many, such as to house and protect the spinal cord, hold the body and head upright, and adjust the movements of the upper and lower limbs.
3 Νοε 2023 · The extrinsic (superficial) back muscles, which lie most superficially on the back. These muscles are also called immigrant muscles, since they actually represent muscles of the upper limb that have migrated to the back during fetal development.
The muscles of the back can be arranged into 3 categories based on their location: superficial back muscles, intermediate back muscles and intrinsic back muscles.
muscles are associated with the upper extremity; intermediate muscles are associated with respiration; deep muscles are associated with movements of the trunk and back. (see chart for muscle names, actions and innervation).
The Trapezius (trap) muscle is a long, trapezoid-shaped muscle that runs down the upper section of the spinal cord, originating at the base of the skull and attaching down in the middle to lower back. The angles of the Trapezius fibers provide pull in three different directions: up, down and in towards the centerline of the body. Functions.
30 Οκτ 2023 · We’ve created muscle anatomy charts for every muscle containing region of the body: Upper limb; Lower limb; Head and neck; Trunk wall; Each chart groups the muscles of that region into its component groups, making your revision a million times easier. For example, upper limb muscles are grouped by shoulder and arm, forearm and hand. Next to ...
Your back muscles work together to allow you to bend over, twist, turn your head and extend your back. They also help you breathe by expanding and contracting your chest when you breathe in (inhale) and out (exhale).
