Male GU Flashcards
male genital examination
- Penis and urethral meatus
- Scrotum
- -Testes
- -Duct system and spermatic cord
- Inguinal area
- -Lymphatics
- -Hernias
penis anatomy
- Shaft
- -Corpus cavernosa (2 erectile bodies)
- -Corpus spongiosum-surrounds urethra
- Glans: extension of corpus spongiosum
- -Corona
- Prepuce (foreskin)
- Urethra
Scrotum anatomy
- Two compartments
- Each contains:
- -Testis
- -Epididymis
- -Spermatic cord & vas deferens
- Skin has hair and apocrine, sweat and sebaceous glands
Spermatic cord
bundle of fibers and tissues that form a cord-like structure that runs through the abdominal region down to the testicles in males. This cord is present in a pair, with one cord connecting with one testicle. It performs multiple functions in males, including the primary function of facilitating the passage for semen. Problems with the functioning of this cord can result in pain in the pelvis and impotence. In anatomical terms, the cord is usually referred to as the vas deferens. However, the vas deferens is just a part of its anatomy, and this cord also performs the additional role of supplying blood to the testicles. The cord is enveloped by fibrous tissue to prevent it from the risk of injury and trauma, but it is still delicate enough to be vulnerable to the torsion of testicles
problems with spermatic cord
Apart from testicular torsion, the spermatic cord is also prone to the risks of herniation. A hernia can impinge upon the cord, resulting in its malfunctioning. Surgical treatment may be necessary to correct this condition.
testes anatomy
- Ovoid
- Somewhat rubbery
- Average 3.5 - 5.5cm in length
- Left lower than right
epididymis anatomy
- Coiled duct (20+ feet long!)
- -Runs from top to bottom of testis
- -Continuous with vas deferens
- Lies posterolaterally along the testes
- Soft, rubbery structure
Vas Deferens
-long, muscular tube that travels from the epididymis into the pelvic cavity, to just behind the bladder. The vas deferens transports mature sperm to the urethra, the tube that carries urine or sperm to outside of the body, in preparation for ejaculation.
Spermatic cord anatomy
- Testicular blood supply – arterial and venous
- Spermatic ductal system (vas deferens)
- External and internal inguinal rings
- Lymphatics
- Nerves
- Cremasteric muscle
Lymphatic drainage
- Inguinal nodes
- -penis
- -scrotal surface
- Periaortic abdominal nodes
- -Testes, prostate
Inguinal lymph nodes
- Supramedial superficial inguinal
- Superolateral superficial inguinal
- Inferior superficial inguinal
- Deep inguinal lymph nodes
inguinal ligament
Inguinal ligament runs from ASIS to pubic symphysis
Femoral vessels pass underneath
Lymph nodes and inguinal canal are superficial to it
tanner stages (sexual developtment)
Important to document in pediatric or adolescent patients
signs of male aging
- Pubic hair: Graying or decrease
- Penis may decrease in size
- Testicles may drop lower in scrotum
inspection of the penis
Shaft & prepuce:
- Ulcers
- Scars
- Nodules/Lesions
- Inflammation
syphilis
Initial symptom is a painless ulcerative chancre with an indurated center and pale edges.
This lesion will resolve spontaneously without treatment and become latent syphilis.
HPV: Condyloma Acuminata
- Common cause of genital warts
- Usually caused by HPV types 6 & 11
- HPV vaccination now recommended for boys & girls
- -Protects against HPV 6,11,16,18
herpes simplex virus
Initial cluster of small vesicles followed by shallow, painful ulcers on a red base
Lesions self resolve then recur
phimosis
- tight prepuce; cannot be retracted over glans
- Foreskin cannot be retracted behind the glans penis
- In pediatric patients younger than 4 years, it is normal for the foreskin to be unretractable
paraphimosis
- tight prepuce; cannot be returned once retracted
- Foreskin is retracted and left behind the glans penis
- This constricts the glans, causing vascular engorgement and edema
- Often iatrogenic