Muscular Pelvis
Terms
undefined, object
copy deck
-
Iliacus
-insertion
-action
-nerve -
-Inserts on lesser trochanter
-Most Powerful Thigh flexor
-Femoral nerve -
Psoas major
-insertion
-action
-nerve -
-Inserts on lesser trochanter
-Flexes thigh and balance trunk
-Nerve L2-L4 -
Piriformis
-inserts
-action
-nerve -
-Inserts on Greater trochanter
-Laterally rotates thigh when extended, abducts thigh
-S1, S2 -
Obturator internus
-inserts
-action
-nerve -
-Inserts on Greater trochanter
-Laterally rotates thigh when flexed
-L5-S1 - Prepuce
- foreskin- fold of skin covering glans
- Glans
- expansion of corpus spongiosum that forms the head of penis
- Shaft
-
-Corpora cavernosa (blood-filled sinuses) (2)
-Corpus spongiosum (1) surrounds the spongy urethra - Penis root consists of:
-
-Bulb
-Crura
-Fundiform ligament
-Suspensory ligament - Urethral meatus
- external opening of the urethra from the head of the glans penis
- Perineum
- Area beween scrotum and anus
- Male pelvis TYPE:
- Android
- Features of Android pelvis:
-
-Heart-shaped
-Prominent ischial spines
-Narrow outlet
-Acute pubic arch (<90') - Male pelvis is _____ where the Female pelvis is ______
-
Male = Convergent
Female = Divergant - Female pelvic system derives from ____
- Mullerian / PMD system
- Male pelvic system derives from _____
- Wolffian / Mesonephric system
- What muscle covers the Corpus Spongiosum in the male?
- Bulbospongious - starts at the root, the bulb of the penis.
- What muscle covers the crura?
- Ischiocavernosus
- 3 Fascial layers of Spermatic cord:
-
-External spermatic fascia
-Cremasteric muscle
-Internal spermatic fascia - 2 Layers of fascia in Scrotum/perineum:
-
-Superficial
-Deep - What is the superficial layer?
- Dartos/Colle's/Scarpa's
- What is the deep layer?
- Buck's fascia
- What potential arises by the fact that there are 2 fascia layers in the scrotum?
- Injury can cause blood to fill the space between deep/superficial fascia.
- What nerve gets blocked in the Circumsion procedure?
- Dorsal nerve - an extension/termination of the pudendal nerve.
- Preprostatic urethra
- Proximal to prostate, surrounded by internal urethral sphincter
- Which part of urethra is surrounded by prostate?
- Prostatic
- Which part of urethra runs through UG Diaphragm?
- Memebranous - surrounded by external urethral sphincter too
- Which section of penis is longest?
- Spongy
- What are the seminal colliculi?
- Where the ejaculatory duct and prostatic utricles enter the urethra.
- Where does Prostate cancer usually spread to first?
- Lumbar veins
- What are the 4 accessory organs in the male pelvis?
-
-Ductus deferens
-Seminal vesicles
-Bulbourethral glands
-Ejaculatory ducts - Components of the Testes:
-
-Tunica Albuginea
-Seminiferous tubules
-Epididymus
-Ductus deferens
-Gubernaculum Testes - What is the tunica albuginea?
- The tough outer covering
- What is the Gubernaculum testes?
- The male analog to the round ligament in females
- What is the function of the Gubernaculum?
- To prevent twisting of the testes
- Where is a hydrocele associated w/ indirect hernia located?
- Between Parietal and Visceral layers of tunica vaginalis in the scrotum
- How do you determine if a hydrocele accompanies an indirect hernia?
- Shine light - if fluid accumultd it will glow red.
- What artery supplies the testes?
- Pudendal (branches in a few)
- Which side is a varicocele vein more common on?
- Left side
- What supplies blood to the penis? Why is it important?
- Deep artery of penis - maintains an erection.
- What is the main source of blood to the testes? What takes it away?
-
-Testicular artery (R/L)
-Pampiniform plexus - What is the main blood supply to the prostate? What aids it?
-
Inferior Vesicular Artery
-also middle rectal and superior vesical - What are the branches of the Internal Pudendal artery?
-
-Deep artery of penis
-Dorsal artery of penis
-Urethral artery
-Perineal artery
-Artery of bulb of penis - What does Point/Shoot mean?
-
Point = erection = Parasymp
Shoot = Ejaculate = Sympathetic - What spinal cord levels do the PArasympathetic nerves come from?
- S2-S4; Pelvic Splanchnic nerves
- What spinal cord levels do the Sympathetic nerves come from?
- T10-L2; Superior Hypogastric plexus
- 4 sensory nerves in Male Pelvis:
-
-Pudendal
-Posterior femoral cutaneous
-Ilioinguinal
-Genitofemoral - Branches of Pudendal nerve:
-
-Dorsal nerve of penis
-Perineal nerve
-Inferior rectal nerve
-Posterior scrotal - What is Priapism?
- Erection lasting more than 4 hours - can result in ischemia and permanent impotence
- Common cause of hemorrhoids:
- Enlargment of venous circulation - due to portal hypertension.