Male reproductive system diagram with labels.

Here are the functions of the labeled parts of the male reproductive system shown in the image:

• Urinary bladder: Stores urine before it is expelled from the body.
• Ureter: Carries urine from the kidneys to the urinary bladder.
• Seminal vesicle: Produces a fluid rich in fructose and other substances that nourish sperm and contribute to semen volume.
• Vas deferens: Transports mature sperm from the epididymis to the ejaculatory duct.
• Prostate gland: Secretes a milky, slightly acidic fluid that enhances sperm motility and viability.
• Bulbourethral gland (Cowper's gland): Produces a clear, lubricating fluid that neutralizes acidic urine residue in the urethra before ejaculation.
• Urethra: Serves as a passageway for both urine and semen to exit the body.
• Penis: The external organ that delivers semen into the female reproductive tract during sexual intercourse.
• Testis: Produces sperm and male sex hormones (e.g., testosterone).
• Epididymis: Stores and matures sperm, allowing them to gain motility.
• Foreskin: A fold of skin that covers the glans penis (if uncircumcised).
• Glans penis: The sensitive tip of the penis.