Male pelvic contents and the anal triangle Flashcards
Vas deferens
Muscular tube carries sperm towards prostate
Direction of Vas deferens
comes in side of pelvis where deep inguinal ring is, across vessels down posterior to bladder and then underneath bladder`
Which two ducts join to form the ejaculatory duct?
Vas deferens and the seminal vesicle
What meets with the ejaculatory duct in the prostate ?
The urethra
Direction of ureter
bifircation of arteries down to base of bladder
What do the seminal vesicles secrete?
secrete liquid component of semen which thins sperm
Also contains fructose which is energy supply for sperm
Are the seminal vesicles reteroperitoneal?
Yes, they are locate behind the bladder
Bladder arterial
Superior vesicle vessels from internal iliac to supply top half of bladder
Inferior vesicle artery supplies bladder in males
What artery supplies the prostate gland?
Prostatic artery
Where is the prostate gland in relation to the bladder?
Inferior to the bladder
What products does the prostate gland contain to help support sperm?
Proteolyctic enzymes and acid phophatase
Arteries of prostate gland
Internal pudendal
Middle rectal
Inferior vesical arteries
Venous drainage of prostate gland
Deep dorsal of penis > plexus> internal iliac
Name two structures which support the prostate gland
Pubo- prostatic ligament Levatore prostate (part of pelvic floor)
Testes lymphatic drainage
aortic nodes at root of the testicular artery (@L2)
Skin of penis and wall of scrotum lymphatic drainage
superficial inguinal nodes
What is the walls of the Ischioanal (rectal) fossa?
Ischial tuberosity, rectum/ anal canal
What is the roof of the Ischioanal (rectal) fossa?
Levator ani (pelvic diaphragm)
What is the floor of the Ischioanal (rectal) fossa?
skin
What is the contents of the Ischioanal (rectal) fossa?
branches of the pudendal nerve, artery, vein and adipose tissue
What type of muscle are the internal anal sphincters made of ?
smooth muscle , they are involuntary and automatically open when rectum is full
What type of muscle are the external anal sphincters made of ?
Skeletal muscle, they are voluntary near the outside of anal canal
Which nerve supplies the external anal sphincters?
Pudendal nerve
What does the rectum become when it pierces the pelvic floor?
The anal canal
What is the external anal sphincter attached to?
The Perineal body and the anococcygeal ligament
What is the function of the external anal sphincter involving the anus?
Closes anus (rectal control aided by puborectalis)
Which nerve innervates the external anal sphincter?
Pudendal nerve (S2-4) inferior rectal branch
External anal sphincter is made of which 3 parts?
deep, superficial and subcutaneous
Arterial supply of rectum
rectum column is supplied by superior rectal artery
Internal iliac branches to give middle rectal artery and internal pudendal artery which branches to give inferior rectal artery
What nerves are above the pectinate line?
Visceral motor and sensory innervation
What nerves are below the pectinate line?
Somatic motor and sensory innervation
Lymphatics above pectinate line
To internal iliac lymph node
Lymphatics below pectinate line
To superficial inguinal lymph nodes
