title: Ultrastructure of the normal human urethra.
abstract: The normal ultrastructure of the prostatic, bulbar and penile urethra in the human is described. The human urethra contains both exocrine and what appear to be endocrine glands. Further study is in progress to define the nature and role of the secretion from these endocrine glands.
mesh_terms: D001078:APUD Cells / Q000648:ultrastructure; D000368:Aged; D001706:Biopsy; D003238:Connective Tissue / Q000648:ultrastructure; D003558:Cystoscopy; D003593:Cytoplasm / Q000648:ultrastructure; D004848:Epithelium / Q000648:ultrastructure; D006801:Humans; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D010413:Penis; D011467:Prostate; D014521:Urethra / Q000648:ultrastructure*