Male Orgasm

The male orgasmic cycle goes through exactly the same sequence: excitement, plateau, orgasm and resolution. Moreover, it is equally complex.

The excitement phase begins as a response to a sexual thought or feeling, or to physical stimulation. The penis responds almost immediately, and becomes erect.  Blood fills the spaces (corpora cavernosa) within the flaccid (soft) penis, so that it can enlarge to six inches or more in length when erect. Breathing deepens, the pulse rate increases and the body is more sensitive.

The plateau phase follows, and the penis is now fully erect. It may have darkened in colour, and a drop of liquid may appear at the entrance to the urethra. This is seminal fluid, and it may contain a small amount of sperm.

The testicles increase in size by as much as 50 per cent, rising up towards the body. And the genital area increases in sensitivity as orgasm is approached.

Orgasm is made up of two stages, but these are linked in such a way that it is impossible to have the first without the second. First sperm travel out of the testicles up the vas deferens (seminal duct) to the seminal vesicles. These vesicles produce semen, which is mixed with the sperm, and is then ready for ejaculation. About four seconds later the fluid is pushed up into and along the urethra, a result of a series of contractions made by the prostate gland and the urethral muscles. The semen is then ejaculated out of the urethra. This is an extremely exciting sensation. 

The resolution phase sees that penis returning to a non-aroused state, and loosing the erection. The physical tension, which has accompanied arousal, now disappears, and this man may feel very relaxed and sleepy.