Question

What is the mechanism of penile erection?

Answer 1

The male sex organ, the penis, produces the greatest growth during adolescence. The penis serves as a channel for urine to exit the body in addition to its sexual function. Changes in blood flow in the penis cause an erection. The Glans, Corpus cavernosum, Corpus spongiosum, and Urethra are all components of the penis.

Complete answer:
Penile erection occurs by the following mechanism:
The arousal of the senses and the mind triggers an erection. Nerve transmissions begin to stimulate the penis during physical intimacy. The corpora cavernosa's muscles subside as a result of brain and peripheral nerve impulses, blood is pumped in and replenishes the open areas. Blood pressure builds up in the corpora cavernosa, causing the penis to enlarge and cause an erection.
The tunica albuginea (the integument encasing corpora cavernosa) aids in keeping the blood contained in the corpora cavernosa, persisting the erection. When the muscles in the penis constrict, blood flow is inhibited and outlet channels are released, as a result erection is reversed.

Additional information:
The incapacity to acquire a hard adequate erection for intercourse is referred to as erectile dysfunction (impotence). Erectile dysfunction is defined as a man's failure to get or maintain a hard sufficient arousal to have sex on a regular basis, or if it interferes with other intimate activities.

Note:
Penile erection occurs when the blood vessels in the penis flex and free up when a man gets sexually stimulated, permitting blood to enter them. An erection is triggered by blood confined at high pressure. Ejaculation is a reflexive response that governs the central nervous system.