Looking for Penile Anatomy Chart

I mean a REALLY good one that lists EVERYTHING, I’ve been looking and looking. Any of you got one? :)

-ItsElectric

I. Shaft of Penis
A. Corpus Cavernosum (two)
1. Two large columns of erectile tissue on penile dorsum
2. Columns separated by septum of fibers
B. Tunica albuginea
1. Bands together the two columns of corpus cavernosa
C. Lacunar space (Space of Smith)
1. Surrounds tunica albuginea
2. Intralacunar smooth muscle found within space
D. Corpus spongiosum
1. Located on ventral side (underside) of penis
2. Does not contribute to penile rigidity
3. Contains urethra
II. Glans (Head) of Penis Innervation
A. Sensation
1. Pudendal nerve supplies dorsal nerves to penis
B. Erectile function
1. Parasympathetic input (excitatory)
a. Nervi erigentes runs adjacent to prostate gland
b. Parasympathetic nerves join at hilum of penis
c. Nerves course through corpus cavernosa
2. Sympathetic input (inhibitory)
a. Sympathetic nerves supplied by thoracolumbar plexus
III. Vascular Supply of the Penis
A. Arterial inflow
1. Supplies glans penis and shaft of penis
2. Branches of deep internal pudendeal arteries
a. Common penile artery
b. Bulbar artery
c. Dorsal artery
d. Urethral artery
e. Cavernosal artery
B. Venous drainage
1. Superficial penile veins
a. Superficial dorsal vein
2. Intermediate penile veins
a. Emissary vein
b. Circumflex vein
c. Deep dorsal vein
3. Deep penile veins
a. Hilar vein (Santorini’s Plexus)
b. Cavernosal vein
IV. Erection Physiology
A. Step 1: Flaccid Penis
1. Intralacunar (cavernosa) smooth muscle contracted
2. Under Alpha adrenergic control (Norepinephrine)
B. Step 2: Cavernous nerve stimulation (Parasympathetic)
1. Alpha Adrenergic Receptor blockade
a. Acetylcholine
b. Vasoactive intestinal peptide (VIP)
c. Prostaglandin (Prostacyclin system)
d. Nitric oxide (nitrergic system)
i. Released from nerve endings
ii. Activates guanosine triphosphate to produce cGMP
2. cGMP causes smooth muscle relaxation
3. Intralacunar (cavernosa) smooth muscle relaxes
C. Step 3: Arterial Inflow increases
1. Lacunar space dilates
2. Helicine artery dilates
D. Step 4: Venous outflow blocked
1. Subtunical venules compressed
2. Emissary veins (in tunica albuginea) compressed
E. Step 5: Erection as lacunar space pools with blood
1. Blood fills space rapidly with arterial dilation
2. Blood trapped due to venous constriction
F. Step 6: Ejaculation (Sympathetic Stimulation)
1. Controlled by hypogastric plexus sympathetic impulse
G. Step 7: Detumescence (Penis flaccid again)
1. Decreased parasympathetic tone
2. Baseline sympathetic tone maintained

There’s a good list of everything, but it didn’t come with a picture.

-ItsElectric

It’s difficult for one drawing to show that much detail. The nerves and vessels of the circulatory system are complex and each would require its own drawing. By the end of the week I’ll have my anatomy/erection thing done and will provide appropriate illustrations.

Thank you very much westla! The reason I want a picture(s) that lists everything is because I feel that, to enlarge your penis it would be your best bet to know everything about it. This could help in determining if new exercises you make are effective as well as the different ways/best ways to do things.

-ItsElectric

Its,

If you will give me some time to hunt thru my many boxes of medical textbooks, I might just have what you are looking for. If not one pic then a couple.

I am in the process of remodeling my bedroom and the books are in a box(es) in the closet. So it may take me a couple of days. Then I gotta hook the scanner back up. But I will get them on here for you, I promise.

sunshine kid, I also eagerly await these photos.

Thanks!

See if this will hold you over until WLA gets his online.

Also, have you checked the online version of Gray’s Anatomy? The link is in the Links Forum a couple of pages back I think.

Found my books, it looks like it will show everything you want. Now all I have to do is get the scanner working ……………………..