| Corpus Cavernosum | One of the two columns of erectile tissue found in the penis that fills with blood during arousal, causing an erection. |
| Corpus Spongiosum | The erectile tissue surrounding the urethra in the penis, preventing it from being squeezed shut during an erection. |
| Ductus Deferens | A muscular tube that transports mature sperm from the epididymis to the urethra in preparation for ejaculation. |
| Ejaculatory Duct | The duct formed by the fusion of the ductus deferens and the seminal vesicle, through which seminal fluid is transported into the urethra. |
| Epididymis | A long, coiled tube atop the testicle where sperm mature and are stored. |
| Glans Penis | The sensitive bulbous structure at the distal end of the penis, often considered the most sensitive area of the male reproductive system. |
| Penis | The male reproductive organ that contains the urethra, through which urine and semen are expelled from the body. |
| Prostate Gland | A gland surrounding the urethra that secretes fluid nourishing and transporting sperm during ejaculation. |
| Seminal Vesicles | Glands adjacent to the bladder that produce a significant portion of the seminal fluid, a component of semen. |
| Testicles | The male reproductive glands located in the scrotum, responsible for producing sperm and testosterone. |
| Tunica Albuginea | A fibrous envelope surrounding the corpus cavernosum and corpus spongiosum in the penis, aiding in erection by trapping blood within the erectile tissues. |
| Urethra | The tube running through the penis that carries urine from the bladder to the outside of the body and also serves as a conduit for semen during ejaculation. |
| Urinary Bladder | A hollow organ that stores urine from the kidneys before it is excreted. Though primarily part of the urinary system, it is included in reproductive diagrams due to its proximity to male reproductive organs. |
| Vasectomy | A surgical procedure for male sterilization or permanent contraception that involves cutting and sealing the vas deferens, thereby preventing sperm from entering the urethra and thus preventing fertilization. |
