Lecture 22 RH Flashcards
What part of the urethra is the widest part of the urethra in young males?
In a young male the prostatic urethra is the widest part of the urethra in a young male but it narrows with aging as the prostate gland hypertrophies.
How does the vas deferans and ductus deferans join into the ejaculatory duct?
ductus deferens joins with the ejaculatory duct through the ampulla.
Where do the prostatic nerves come from?
They are branches of the pudendal nerve
What is the clinical significance of the prostate’s position?
Prostatic nerves are prone to injury during surgery (40% of cases there will be some loss of fecal and micturition control)
What key divisions does the prostate contain?
Prostate is divided into zones when imaged. Median lobe is replicated by the transition zone. Periphery is referred to as the peripheral zone this location tends to be the origin of cancer cells. Transition zone is the site of hypertrophy (benign prostatic hypertrophy)
What tissue is the penis made up of?
penis is made up of cavernous tissue (made up of spaces.
What structures does the penis contain?
Paired corpora cavernosa (large number of spaces for blood vessels)
Corpus spongiosum (around penile urethra)
urethra
What is the normal anatomical position of the penis?
anatomical position of the penis is erect.
Where do the corpora cavernosa originate?
corpora cavernosa originate at the bulbs of the penis.
What penile structures does the clitoris also contain?
Clitoris has bulbs as well
What are the difficult narrowings that must be navigated through to get to the bladder via the urethra?
Navicular fossa
pelvic floor (membranous urethra) and the prostatic urethra which contains a 90 degree angle between them.
What surgical intervention can be used for people with erection problems?
inflatable penile prosthesis can be used for people with severe problems with erection problems.
What are the muscles from which levator ani extends that are found on the wall of the pelvis:?
piriformis and obturator internis.
What are the boundaries of the anal and urethral triangles?
pubic symphysis, ischial rami and ischial tuberosity in anterior triangle.
Anal triangle is angled posteriorly and is bound by the ischial tuberosities, the sacrotuberous ligament, and the coccyx + sacrum..
What is the function of the perineum regarding the genitals?
perineum is the site of anchorage of the penis and the clitoris.