Which muscle stabilises the lumbar vertebrae

Four or 5 paired lumbar arteries branch off this aorta and send blood to the muscles, ligaments, and the vertebral bodies. These arteries are accompanied by lumbar veins that carry deoxygenated blood back to the heart. Abnormal thickening of the wall of the abdominal aorta may cause a life-threatening condition called abdominal aortic aneurysm. Pulled Back Muscle Treatment. Back Muscles and Low Back Pain. You are here Conditions Spine Anatomy. Soft Tissues of the Lumbar Spine share pin it Newsletters.

The combination of these two muscles form a protective corset within the body to protect the spine and hence the name, the primary stabilizers.

The secondary stabilizers are additional muscles that are important to protecting the spinal column. These are recognized as secondary stabilizers as they do not directly connect to the spinal column itself. The secondary stabilizers include the internal obliques Figure 19 , external obliques Figure 20 , gluteus maximus Figure 21 , and the gluteus medius Figure Without strong hips supporting the base of the spine, a healthy spine cannot exist.

The hips should be emphasized and used in all standing or bending activities to minimize compression, shear, and rotational forces to the spine itself. You did not finish creating your certificate. Failure to complete ALL the steps will result in a loss of this test score, and you will not receive credit for this course.

Tendons are similar to ligaments, except these tension-withstanding fibrous tissues attach muscle to bone. Tendons consist of densely packed collagen fibers. Muscles, either individually or in groups, are supported by fascia. Fascia is strong sheath-like connective tissue. The tendon that attaches muscle to bone is part of the fascia. The muscular system of the spine is complex, with several different muscles playing important roles.

The primary function of the muscles is to support and stabilize the spine. Specific muscles are associated with specific movements of parts of the anatomy. For example, the sternocleidomastoid muscle neck area assists with movement of the head, while the psoas major muscle low back area is associated with flexion of the thigh.

The muscles in the vertebral column serve to flex, rotate, or extend the spine. If there are pathology with the aforementioned components of the spine, such as discs, bone, ligaments, and their subsequent alignment, it often falls on the muscles to work hard to compensate.

These muscles themselves can irritate small nerves contributing to pain themselves. With so much movement possible in the spine, the muscles are overlooked as a source of pain.

The deep muscles of the back fit into or affix parts of themselves to the grooves in the spinous process the protrusion of the bone than can be felt through the skin. Important muscles of the lumbar spine include:. The primary extensor of the spine is the Erector Spinae. Its tendinous origin is extensive, arising from the top of the pelvis iliac crest , most of the lumbar vertebrae, and several of the lower thoracic vertebrae.

The appearance is that of one common back muscle. Within the lower back we can name three which are important to treating and preventing lower back pain. Deep lumbar multifidus MF 2. Transverse Abdominis TrA 3. Psoas Major PM. Each of the three muscles have a role on the lumbar spine, due to the location of its attachments. The MF attaches at the back of the spine and connects to each of the vertebrae — its role is to control one vertebrae moving forward on the other.

You may be more aware of this muscle, as it is most commonly discussed by physios and other healthcare professionals. Its role is to control sideways movements. The PM, is probably the most unknown and misunderstood within the spinal stability field.