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In fact, these veins are important. After blood flows to the penis to give you an erection, the veins along your penis take blood back to the heart. Some people have veins that are more visible than others. Vein size and shape can change over time or after having sex, getting injured, or having blood vessel surgery. Read on to learn more about why your veins are important, how they can change over time, and when to see your doctor. Penis vein visibility is influenced by many of the same factors. When you get an erection, oxygenated blood from your heart travels through your arteries to three chambers of spongy tissue called the corpus cavernosum and the corpus spongiosum, to the shaft of your penis. The blood then drains through the veins that run across the surface of your penis. This significant increase in blood flow can make the veins appear much larger than usual.
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What makes an exceptionally good dick? To find out, I asked 20 women to share their preferences for the perfect penis. Some foreskin appears a bit saggy and sad.