<prompt> While performing culdocentesis in female patient ,needle should be most efficiently inseed through which of the following structures ?Anterior fornix of the vaginaPosterior fornix of the vaginaAnterior wall of the rectumPosterior wall of the uterine body  <response>: A needle should be inseed through the posterior fornix, just below the posterior lip of cervix while the patient is in supine position, to aspirate abnormal fluid i the cul-de-sac of Douglasrectouterine pouch. Rectouterine excavation is not most efficiently aspirated by puncture of other structures. 