Thickness (and leaves) A leaf is as thick as the width of one brick, but a wall is said to be one brick thick if it as wide as the length of a brick. Accordingly, a single-leaf wall is a half brick thickness; a wall with the simplest possible masonry transverse bond is said to be one brick thick, and so on.
Thecal sac is the layer that protects the spinal cord. It is filled with cerebrospinal Fluid and has numerous nerve roots Thecal sac is the layer that protects the spinal cord. It is filled with cerebrospinal Fluid and has numerous nerve roots. Thecal sac is enclosed in the Dura Matter. Dura matter is the outer layer which covers the central nervous system, which includes the brain and spinal cord 1. Thecal sac varies in both genders.
A Tarlov cyst is a dilation of the nerve root sheath or outer covering of the nerve. Cerebral spinal fluid gets trapped inside the sheath and forms a cyst.The fluid in the cyst can put pressure on the nerve inside and on the adjacent nerve roots and cause debilitating symptoms.They can occur anywhere along the spine where there are nerve roots. They are most prevalent in the sacrum or base of the spine.he post-operative appointment is mostly with the nurse. An MRI is done at 3 months and one and two years after surgery. Post-operative surveys or questionnaires are filled out by patients at 3 and 6 months and one and two years after the surgery.