Lumbar Muscle Anatomy

Both muscles are innervated by the posterior branches of the spinal nerves. Lower back and superficial muscles.

Posterior Muscles In The Thoracic And Lumbar Region Netter

The rhomboid muscle is activated as you bring and squeeze your scapula or shoulder blades back and together.

Lumbar muscle anatomy. It stabilizes and rotates the lumbar spine. This superficial muscle begins as a thick tendon from the sacrum and travels up into the neck inserting at the spinous processes of the cervical vertebrae. The spinal cord is contained within the vertebrae of the spine running through the vertebral foramen and branching out to the peripheries through the intervertebral foramen.

You can protect the back muscles by bending from the hip and knee when you lift objects from the ground. The intrinsic deep muscles of the backcan be further subdivided into their own superficial intermediate and deep layers. Muscles of the lumbar spine of the trunk.

The complex anatomy of the lumbar spine is a remarkable combination of these strong vertebrae multiple bony elements linked by joint capsules and flexible ligamentstendons large muscles and. This blog post article is an overview of the muscles of the lumbar spine of the trunk. There are two major muscles within this category the serratus posterior superior and the serratus posterior inferior.

Injuries of the intrinsic back muscles often occur while using improper lifting technique. The muscles in all of the layers are innervated by the posterior rami of spinal nerves. This muscle is located on the upper portion of the back anatomy underneath the trapezius.

The trapezius muscle is innervated by the accessory nerve cn xi and the cervical plexus c2 to c4 has its origins on the occipital bone and the spinous processes of the t1 to t12 verterbae and inserts on the lateral third of the clavicle. The lumbar and sacrum region make up the bone of the lower back anatomy. They originate from the vertebrae and insert into the scapulae.

Another long muscle this one begins in the middle of the lumbar spine and continues up to the transverse process. These muscles collectively work to help movements of the vertebral column and to also control. Muscles of the lumbar spine.

For more complete coverage of the structure and function of the low back and pelvis the muscular system manual the skeletal muscles of the human body 4th ed. Lower back muscle anatomy includes the multifidus longissimus spinalis and quadratus lumborum. Whilst the superficial muscles of the back allow movements at the shoulder the intermediate muscles of the back work to elevate and depress the rib cage.

Pelvis Hip Anatomy