The three regions of the male urethra are:
a. the prostatic, membranous, and penile/penile
b. the prostatic, bulbar, and penile
c. the prostatic, vesicular, and penile
d. the vesicular, bulbar, and penile
e. the vesicular, membranous, and penile

The answer is A: The prostatic, membranous, and penile.

Explanation:

The male urethra is a tube approximately 20 centimeters long, which begins in the bladder meatus and extends to the body of the penis with salinity to the outside through the urinary meatus. It consists of 3 portions:

-Prostatic urethra in intimate relationship with the prostate.

-Membranous urethra located in the pelvis; It is the shortest and most extreme portion of the urethra.

-Uretra penile or spongy penis in relation to the spongy body, an erectile sheath that runs through the ventral part of the penis.

activation of phospholipase c (plc) indirectly increases intracellular ions through inositol triphosphate (ip3).

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explanation:

you did not provide anything to go off of.