In spinal anaesthesia the drug is deposited between?: (A) Dura and arachnoid, (B) Pia and arachnoid, (C) Dura and veebra, (D) Into the cord substance
Answer is B. Ans. is 'b' i.e., Pia and arachnoid matter o In spinal anaesthesia LA is injected into subarachnoid space (space between pia matter and arachnoid matter). o Structure pierced during SA (from outside in) - Skin - Subcutaneous tissue --> Supraspinous & intraspinous ligament --> Ligamentum falvum --> Duramater - Arachnoidmater.