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Latissimus Dorsi

Latissimus dorsi (lat) is a large, flat triangular muscle which is also the widest muscle in the human body. It begins in the lower portion of the back and tapers as it ascends to a narrow tendon that attaches to the humerus anteriorly. Due to which the

Spinal Meninges

The spinal cord is surrounded by 3 coverings referred to as meninges. From superficial to deep, all these are as follows: Spinal dura mater. Spinal arachnoid mater. Spinal pia mater. The subdural space is potential space between the dura and arachnoid maters while subarachnoid space is the

Erector Spinae Muscles

Among intrinsic back muscles the erector spinae remains the largest group. The muscles are located medially amid the spinous processes, posterolaterally towards the vertebral column as well as laterally towards the angles of the ribs. Inside the thoracic and lumbar regions thoracolumbar fascia as well as the

Tracts of the Spinal Cord

The tracts are referred to as after the names of masses of grey matter joined by them. Their names normally contain 2 parts (or terms), the very first term indicates the origin and second the conclusion of the tract. As an example, a tract originating in cerebral

Zygapophyseal Joints (Facet Joints)

Zygapophyseal Joints are joints that are located in the middle of the superior and inferior articular processes of adjacent vertebrae. Structural resistance to anterior shear forces in the lumbar segments is given by the shape of the zygapophyseal joints, the zygapophyseal joint capsules, the fibers of the

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