Lower Back Muscle Anatomy

Lying exposed between the protective bones of the superiorly located ribs and the inferiorly located pelvic girdle the muscles of this region play a critical role in protecting the delicate vital organs within the abdominal cavity. The muscles of the lower back help stabilize rotate flex and extend the spinal column which is a bony tower of 24 vertebrae that gives the body structure and houses the spinal cord.

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The lower back lumbar vertebrae allows for flexibility and movement in back bending extension and forward bending flexion.

Lower back muscle anatomy. The lower back which starts below the ribcage is called the lumbar region. It starts all the way down in your lower back climbs up to the middle of your back and stretches out into your shoulder. Weak abdominals exaggerate anterior pelvic tilt causing strain on the back extensor muscles.

Weak back muscles increase stress on the spine and can cause compression. The muscles of the low back work together with the transverse abdominal muscles to increase intra abdominal pressure. Lower back pain can be irritating but it can be healed.

Back extensor strength and endurance provide stability for the spine maintain posture and control forward flexion. The lower part actually does the opposite of what the upper part does. The muscles of the abdomen lower back and pelvis are separated from those of the chest by the muscular wall of the diaphragm the critical breathing muscle.

The lower trapezius middle trapezius and upper trapezius fibers. Since they extend higher than the collarbone height they are most noticable from the frontal view. Pain here can be intense and is one of the top causes of missed work.

The traps consist of three sections of muscle fibers. Although they actually reach all the way down to the lower back region. The extensor muscles are attached to back of the spine and enable standing and lifting objects.

It does not permit twisting. This is a tutorial to quickly show you. Lower back muscle anatomy includes the multifidus longissimus spinalis and quadratus lumborum.

Fortunately low back pain often gets better on. The latissimus dorsi is the largest and most powerful of your back muscles. Three types of back muscles that help the spine function are extensors flexors and obliques.

Clinical significance edit. It lowers your shoulders away from your ears. These muscles include the large paired muscles in the lower back called erector spinae which help hold up the spine and gluteal muscles.

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