Male Anatomy and How Contraceptives Work in Men Penis Male sex organ made of spongy tissue. When a man becomes sexually excited, it grows larger and stiffens. Semen, containing sperm, is released from the penis (ejaculation) at the height of sexual excitement (orgasm). A male condom covers the erect penis, preventing sperm from entering the woman’s vagina. Withdrawal of the penis from the vagina avoids the release of semen into the vagina.
Seminal vesicles
Urethra Tube through which semen is released from the body. Liquid waste (urine) is released through the same tube.
Where sperm is mixed with semen.
Prostate
Foreskin
Organ that produces some of the fluid in semen.
Hood of skin covering the end of the penis. Circumcision removes the foreskin.
Sack of thin loose skin containing the testicles.
Testicles Organs that produce sperm.
Each of the 2 thin tubes that carry sperm from the testicles to the seminal vesicles. Vasectomy involves cutting or blocking these tubes so that no sperm enters the semen.
Male Anatomy 367
Job Aids/Tools
Scrotum
Vas deferens
