Erectile dysfunction, or ED, means you have trouble getting and keeping the erection

The body of the penis contains three cylindrical masses of tissue. The lower mass is the Corpus Spongiosum, and the two top masses are called Corpora Cavernosa. An elastic fiber sheath called the Tunica Albuginea surrounds all three masses. A cross-section cut of each cylinder looks like a sponge because of the hollow lacunar spaces that fill with blood during an erection. 3dmedicalanimation copyrighted_by_Dandelion _Team Fertilization medical animation we all won this race! What role does sperm structure play in fertilization? ovulation and menstrual cycle often called period The effect of Tied umbilical cord in twins High Blood Pressure Hypertension How your body turns food into the poo Human digestion system in human beings