Lumbar Muscle Anatomy

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. They originate from the vertebrae and insert into the scapulae.

Anatomy 1 Week 3 Quiz 3 Set Z1 Muscle Veins Of Back

You can protect the back muscles by bending from the hip and knee when you lift objects from the ground.

Lumbar muscle anatomy. Lower back muscle anatomy includes the multifidus longissimus spinalis and quadratus lumborum. Injuries of the intrinsic back muscles often occur while using improper lifting technique. The lumbar and sacrum region make up the bone of the lower back anatomy.

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. Both muscles are innervated by the posterior branches of the spinal nerves. 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.

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

Muscles of the lumbar spine of the trunk. Muscles of the lumbar spine. 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 muscles in all of the layers are innervated by the posterior rami of spinal nerves. It stabilizes and rotates the lumbar spine. 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. Lower back and superficial muscles. There are two major muscles within this category the serratus posterior superior and the serratus posterior inferior.

This blog post article is an overview of the muscles of the lumbar spine of the trunk. This muscle is located on the upper portion of the back anatomy underneath the trapezius. The intrinsic deep muscles of the backcan be further subdivided into their own superficial intermediate and deep layers.

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