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The reproductive system ensures the survival of the species. Other systems in the body, such as the endocrine and urinary systems, work continuously to maintain homeostasis for the survival of the individual. An individual may live a long, healthy, and happy life without producing offspring, but if the species is to continue, at least some individuals must produce offspring.
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Ductus deferens - Junqueira's Basic Text and Histology
The ductus or vans deferens is a long straight tube with a thick and muscular wall and a small lumen. It leaves the scrotum and continues toward the prostatic urethra where it empties.
– Its mucosa (M) is slightly folded longitudinally.
– The lamina propria (LP) possesses many elastic fibers.
– The epithelial lining is pseudostratified with some cells having sparse stereocilia.
The thick muscularis consists of longitudinal inner and outer layers and a middle circular layer. The muscles produce strong peristaltic contractions during ejaculation, which move sperm along this duct from the epididymis.