NEET PG DENTAL EXAM

Detailed explanation-1: -What is an erection? An erection is when your penis becomes hard and enlarged from an increase in blood flow. This increase in blood flow makes your penis stand up and away from your body (erect). Sexual stimulation or excitement is the typical cause of an erection.

Detailed explanation-2: -These blood vessels play an important role in erections. During an erection, the arteries expand to increase blood flow to the penis. The blood fills two tubes of spongy tissue in the penis (corpus cavernosa). This causes them to swell, making the penis larger and stiff, so it angles out from the body.

Detailed explanation-3: -A persistent, prolonged erection of the penis that will not go down is called priapism. This unwanted erection may or may not be caused by sexual arousal, is usually very painful and can last for 2 hours or longer. Priapism is a medical emergency. The sooner you treat it, the less risk that the penis will be damaged.

Detailed explanation-4: -The cause of an erection is arousal, which stimulates the release of nitric oxide from nerve terminals and blood vessels. That increases the amount of blood that flows into the erectile tissue. As the erectile tissue fills with blood, the veins that drain the blood out of the penis collapse.