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NCI Dictionary of Cancer Terms

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NCI Dictionary of Cancer Terms



penis  listen  (PEE-nis)

  An external male reproductive organ. It contains a tube called the urethra, which carries semen and urine to the outside of the body.

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Anatomy of the  male reproductive and urinary systems; drawing shows front and side views of ureters, lymph nodes, rectum, bladder, prostate gland, vas deferens,  penis, testicles, urethra, seminal vesicle, and ejaculatory duct.