The precise mechanism of priapism in patients with SCD remains unclear, it is assumed that a normal erection decreases oxygen tension in the corpora cavernosa
, predisposing to erythrocyte sickling (17).
Increasing the blood flow to the two corpora cavernosa
causes the erection to become more rigid.
The thick membrane surrounding the corpora cavernosa
can then tear, causing an audible "cracking" sound, abrupt loss of erection, severe pain, bruising and a bent penis.
The resection margin can be divided in 3 important areas that need to be analyzed: the skin of the shaft with underlying dartos and penile fascia; corpora cavernosa
with albuginea; and urethra with periurethral cylinder that includes lamina propria, corpus spongiosum, albuginea, and penile fascia (Figure 1).
Inadvertent injections into the corpora cavernosa
, urethra or directly into the neurovascular bundle resulting in potential injury and local anaesthetic wastage can be avoided.
Impulses from the brain and local nerves cause the muscles of the corpora cavernosa
to relax, allowing blood to flow in and fill the spaces.
If a hard thrust misses the vagina and impacts against the woman's pubic bone, one of the corpora cavernosa
may rupture and blood leaks into surrounding tissue.
The vascular changes are usually diffuse and interfere with blood supply to the penis and with a veno-occlusive mechanism of the corpora cavernosa
(Kaufman, Hatzichristou, Mulhall, Fitch, & Goldstein, 1994).
, I found out yesterday, are two cylinders which supply blood to .
The sequence includes nerve impulses in the brain, spinal column, and area of the penis, and response in muscles, fibrous tissues, veins, and arteries in and near the corpora cavernosa
To accomplish this, the penis contains two long, expandable sacs called the corpora cavernosa
, each of which has a tough, fibrous outer wall and a spongy inner wall of smooth muscle tissue.
It constricts the arteries and blood vessels supplying blood flow to the corpora cavernosa
penis, or the two columns of erectile tissue on either side of the male sex organ.