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5.3.4 Penis: supports and attachments

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(2.43)

The skin on the underside of the penis is continuous with the skin of the scrotum. To see more of the penis, we'll remove the skin and subcutaneous fat from around its base, and we'll remove the anterior part of the scrotum.

The penis passes through the top of the scrotum between the two spermatic cords. The penis is loosely suspended in this location by this sling of connective tissue from the anterior abdominal wall, the suspensory ligament.

Removing the suspensory ligament lets us see the front of the pubic symphysis. It's here. The penis is firmly attached to the sloping underside of the pubic symphysis by this triangular ligament.

Let's get our bearings here in terms of bony anatomy. Here are the two hip bones, seen from directly in front. This is the pubic symphysis. The penis is attached to it along here. These are the two ischiopubic rami.

To see the rest of the penis, we'll remove this part of it up out of the way, remove the scrotum, and go round to a view almost from underneath.

We'll remove the remaining skin and subcutaneous fat. Now, we're looking up into the anterior part of the perineum. That gives us a major change in viewpoint. Let's get our bearings again. We've gone from this view, all the way to this view. Here are the two ischiopubic rami. They come together at the pubic symphysis, here.

Here are the ischial tuberosities. In the dissection, the pubic symphysis is here, the ischial tuberosities are here, the ischio-pubic rami are here. On each side the adductor magnus muscles of the thigh take origin from the ischio-pubic rami, along here.

Below and behind the pubic symphysis the three main components of the penis separate. The corpus spongiosum stays in the midline ...

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(2.43)

The skin on the underside of the penis is continuous with the skin of the scrotum. To see more of the penis, we'll remove the skin and subcutaneous fat from around its base, and we'll remove the anterior part of the scrotum.

The penis passes through the top of the scrotum between the two spermatic cords. The penis is loosely suspended in this location by this sling of connective tissue from the anterior abdominal wall, the suspensory ligament.

Removing the suspensory ligament lets us see the front of the pubic symphysis. It's here. The penis is firmly attached to the sloping underside of the pubic symphysis by this triangular ligament.

Let's get our bearings here in terms of bony anatomy. Here are the two hip bones, seen from directly in front. This is the pubic symphysis. The penis is attached to it along here. These are the two ischiopubic rami.

To see the rest of the penis, we'll remove this part of it up out of the way, remove the scrotum, and go round to a view almost from underneath.

We'll remove the remaining skin and subcutaneous fat. Now, we're looking up into the anterior part of the perineum. That gives us a major change in viewpoint. Let's get our bearings again. We've gone from this view, all the way to this view. Here are the two ischiopubic rami. They come together at the pubic symphysis, here.

Here are the ischial tuberosities. In the dissection, the pubic symphysis is here, the ischial tuberosities are here, the ischio-pubic rami are here. On each side the adductor magnus muscles of the thigh take origin from the ischio-pubic rami, along here.

Below and behind the pubic symphysis the three main components of the penis separate. The corpus spongiosum stays in the midline and broadens out to become the bulb of the penis.

The two corpora cavernosa diverge to each side, forming the crura of the penis. Here's the left crus, here's the right one.

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