both refer to movie chains (i.e., Loews, AMC Theatres) with movie theatres that screen more than one film at a time, as opposed to single-screen theatres. A multiplex has from 2 up to 16 screens, a megaplex has 16 or more screens; plex is the abbreviation for a multiplex theatre.
A morula (Latin, morus: mulberry) is an early stage embryo consisting of cells (called blastomeres) in a solid ball contained within the zona pellucida.
Problem. A fistula is defined as a communication between 2 organ sites. Vesicovaginal fistula is a free communication between the urinary bladder and the vagina. The urine from the bladder freely flows into the vaginal vault, leading to total or continuous incontinence. Ureterovaginal fistula is a communication between the distal ureter and the vagina.