Complex sentence: In health, crypt orifi are fissure-like, and the walls of the crypt lumen are in near apposition, but tonsillar edema and hypertrophy may effectively seal the orifice, disrupting the cleansing flow of secretions.
Split into simpler sentences: In health, crypt orifi are fissure-like, and the walls of the crypt lumen are in near-apposition. Tonsillar edema and hypertrophy may effectively seal the orifice, disrupting the cleansing flow of secretions.