hi let's talk about the erectile tissues erectile tissues include derivatives of the corpus
spongiosum and derivatives of the corpus cavernosum let's first look at the corpus
spongiosum derivatives in terms of the spongiosum derivatives that are part of the clitoris flanking
the vestibule of the vagina we have two vestibular bulbs we can see one there and the other would be
there those vestibular bulbs are of the spongiosum and they come together along the midline
to also participate as a midline structure the glans clitoris or glands of the clitoris
within the penis the corpus spongiosum derivatives include the bulb of the penis
and the spongiosum continues along the ventral portion of the penis and then towards the distal
penis it expands as the glans penis so looking here in a in a cross section or transverse
section of the penis we can see the the corpus spongiosum there and within it we can see the
spongy or penile part of the urethra which is transmitted through the corpus spongiosum
now covering the uh the bulb of the penis we have bulbospongiosus muscle which we can see here
and over here um the bulbospongiosus muscle
has been removed so that we can see the vestibular bulbs but but that muscle would lie
just superficial to the vestibular bulbs and that bulbospongiosus muscle helps to apply pressure
to the uh the vestibular bulbs and to the uh the bulb of the penis
the corpus cavernosum derivatives um include for the uh for the clitoris the crura of the clitoris
which are going to be in association with the ischiopubic rami and we can see there is the the
left crease and the right crus there the crura are going to come together along the midline
to participate as part of the shaft or body of the clitoris on the on the penis the crura are also in
association with the ischiopubic rami and then they're going to ascend the shaft of the penis
laterally you can see them right there in the transverse section we can see the corpora
cavernosa along the dorsal aspect of the penis and we can see the deep arteries
of the penis within the corpus cavernosum now the ischiocavernosus muscle um is going to cover over
the uh the crura we can see it very well here um at the uh the root of the penis let's see those
muscles right there and they have been removed here from the uh the crura of the clitoris so that
we may see them but they would lie superficially like that and much like the the balboa spongiosus
muscle the issue cavernosus muscles are going to apply pressure to the erectile tissue to um
help maintain tumescence and an erection and help slow the the flow of blood from any of the veins
that are draining these tissues to uh to help maintain tumescence or an erection so we've
discussed the derivatives of the corpus spongiosum and corpus cavernosum thank you for your time