| A | B |
| Male Reproductive System | Produces, stores and delivers sperm and secretes hormones that support male reproductive function |
| Testes | Primary male reproductive organs that produce sperm and testosterone |
| Seminiferous Tubules | Coiled structures within the testes where sperm are formed |
| Spermatozoa | Male gametes containing 23 chromosomes; sperm cells |
| Flagellum | Tail-like structure that allows sperm to be motile |
| Interstitial Cells | Cells that produce testosterone |
| Scrotum | Sac that holds the testes outside of the body and regulates temperature |
| Spermatogenesis | Process of sperm cell production in the testes that begins at puberty |
| Epididymis | Coiled tube that stores and allows sperm to mature |
| Ductus (Vas) Deferens | Tube that transports sperm to the urethra |
| Spermatic Cord | Structure containing blood vessels, nerves and lymphatics supplying the testes |
| Seminal Vesicles | Glands located behind the bladder that produce nutrient-rich fluid for sperm |
| Ejaculatory Duct | Tube that carries semen through the prostate to the urethra; formed by joining the vas deferens with the seminal vesicles |
| Prostate Gland | Gland that adds alkaline fluid to semen, aids sperm motility, and protects sperm in the female tract; located below the bladder, surrounding the urethra in males |
| Bulbourethral Glands | Glands that secrete lubricating and neutralizing fluid to clear the urethra prior to ejaculation |
| Urethra (Male) | Tube that carries urine and semen out of the body |
| Penis | External organ used for urination and sexual intercourse |
| Erectile Tissue | Tissue that fills with blood to produce an erection |
| Glans Penis | Sensitive tip of the penis |
| Prepuce | Foreskin covering the glans penis |
| Testosterone | Androgenic hormone produced by the interstitial cells of the testes |