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The body of the penis contains three cylindrical masses of tissue. The lower mass is the Corpus Spongiosum. The two top masses a 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. Blood is supplied to the penis via the penile artery that splits into Cavernosa arteries which provide blood flow to each corpus cavernosum The urethral artery provides blood to the corpus spongiosum. Blood drains from the penis by superficial, deep dorsal Cavernosa and crewel veins. Sympathetic nerve stimulation results in the contraction of the erectile, which inhibits blood flow into the penis and causes the penis to become flaccid 3dmedicalanimation copyrighted_by_Dandelion _Team full video https://youtu.be/RDYTUcnO3Ao the female body and Biology | Biology of Female https://youtu.be/WDetHC86Dgo Hemorrhoids|different types of hemorrhoids https://youtu.be/8M7IXJBmIpI Virginity and hymen https://youtu.be/P_17PQFpIAY Fertilization medical animation https://youtu.be/u0y2Wvc0Jm0 we all won this race! https://youtu.be/VYWuySwoqUg What role does sperm structure play in fertilization? https://youtu.be/1YxA6zIvIWw ovulation and menstrual cycle often called period https://youtu.be/42WIByexiXc The effect of Tied umbilical cord in twins https://youtu.be/vB9ZBnwTfKg High Blood Pressure Hypertension https://youtu.be/gsczOAeGst4 How your body turns food into poo Human digestion system in human beings https://youtu.be/HXrl37BC3QU food digestion is the story of how your food ends up as a poo 3d medical animation Dandelion team https://youtu.be/TPdQKcFuhPI coronary angiogram Micro Needle|3d medical animation|sample use only https://youtu.be/sRGMJhit4h0 heart valve replacement 3d medical animation|sample use only|dandelion team https://youtu.be/9L9i59eY5Zg short videos how long does it take for the body to digest food? https://youtu.be/z6G2L1hY5hc The world of Inside a bone https://youtu.be/SWCLK4t0iXo What Part of the Brain Controls Emotions? https://youtu.be/UHTm2aqv-tQ small intestine https://youtu.be/7hweT7wgyF0 copyright by Dandelion Team