TheĀ thecal sacĀ orĀ dural sacĀ is theĀ membranousĀ sheathĀ (theca) or tube ofĀ dura materĀ that surrounds theĀ spinal cordĀ and theĀ cauda equina. The thecal sac contains theĀ cerebrospinal fluidĀ which provides nutrients and buoyancy to the spinal cord.[1]Ā From theĀ skullĀ the tube adheres to bon

In the epithelium of the mouth, the attached gingiva exhibit rete pegs, while the sulcular and junctional epithelia do not. Scar tissue lacks rete pegs and scars tend to shear off more easily than normal tissue as a result. Ira D. Papel (2011).Ā Facial Plastic and

Halteres (singular halter or haltere) (from Ancient Greek: į¼Ī»Ļ„ῆρες, hand-held weights to give an impetus in leaping) are a pair of small club-shaped organs on the body of two orders of flying insects that provide information about body rotat

InĀ medicine, aĀ Phrygian capĀ is the folded portion of someĀ gallbladdersĀ that resembles theĀ Phrygian capĀ (a soft conical cap with the top pulled forward, associated in antiquity with the inhabitants ofĀ Phrygia, a region of centralĀ Anatolia). It is a normalĀ anatomicalĀ variant seen in 1-6% of