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FAST REVISION
Anatomy
Cerebrospinal fluid (CSF) rhinorrhea occurs when there is a leak of CSF through the nasal cavity, often due to a defect in the skull base. The ethmoid bone is the most common site for such leaks because of its thin structure and proximity to the nasa
Pharmacology
GlycosaminoglycAnswer (GAGs) are heteropolysaccharides. These molecules are long unbranched polysaccharides containing a repeating disaccharide unit. The disaccharide units contain either of two modified sugars N-acetylgalactosamine (GalNAc) or N-