Prostate – Male Reproductive Organs

00:01 This is an elevation of the prostatic urethra.

00:04 You can see that the prostate, this accessory gland of reproduction, is surrounding the urethra.

00:12 It produces this thin milky fluid which constitutes about 20% of the semen. And the prostate, as I have mentioned, contains the prostatic urethra.

00:23 The posterior wall which is this portion here that we are looking at.

00:27 The posterior wall of the porstatic urethra is characterized by the urethral crest that is this elevation which we can see here.

00:37 We can see we have the prostatic sinus or grooves which are the either side of the crest. So the prostatic sinus and the grooves down here.

00:45 And then we have this prominent seminal colliculus, this prominent elevation which we can see around in this region here.

00:55 The ejaculatory ducts open on the seminal colliculus. So that's where the ejaculatory ducts open into the prostatic urethra.

01:06 The prostatic ducts, they open either side of the urethral crest. Either side of the seminal colliculus in the prostatic grooves or the sinuses.

01:19 You may find that you see this prostatic urethra, just this little opening here and that's the embryological remnants.

01:27 And that is the equivalent of the vagina but obviously that's defunct in the male.