The Glans Clitoris (the shrunk glans penis) = the Glans penis.
The Clitoral shaft = the two upper (supperior) cyclingers (Corpora Covernasoa) of the penis.
http://www.actionlove.com/tao/image/fig6-17b.jpg
The urethra/tissue = the urethra embeded in the lower (inferior) penile cyclinder (Corpus Spongisosum)
the G-spot spot = the Male Trigger Zone under the neck of the glans penis
The Epicenter (Orgasmic Pacemaker) = The Prostate (Orgasmic Pacemaker).
The Epicenter is the degenrated prostate.
The labia are the degenerated scrotum.
I believe that female ejaculation is from the degenerated prostate and the degenerated Cowper's (Bulbourethral) glands in the female couterparts.
http://www.actionlove.com/tao/image/fig6-17b.jpg
The detail is given in
http://www.actionlove.com/tao/image/trigger.jpg
The detail of the clitoris/glans/shaft/root is given in
http://www.actionlove.com/tao/image/fig6-24.jpg
The entire clitoral shaft from the glans to the root is about 1-1.5 inches long.
The clitoral shaft shown on the skin surface is about 1/2 - 1 inch long, depending on the thickness of the fat layer.
In the pre-orgasm and orgasm state, the entire area from the glans clitris down to the Epicenter is swollen, the cervix and uterus are tented up, the vagina tube is expanded into a big hollow hole of about 1.5-3 inches in diameter, the glans clitoris and G-spot are popped out about 3-5 times of the original size, the clitoral shaft is "solid" like a small penis, and the vaginal ceiling is popped out like an upside-down ridge!
http://www.actionlove.com/tao/image/lovetool.jpg