Pelvis dissection and antomy Flashcards
What muscle is directly above the external anal sphincter?
Rectococcygeus
What muscle is either side of the external anal sphincter?
Levator ani
What muscle is either side of the levator ani?
Coccygeus
The main vessels and nerves of the rectum are within…
The ischiorectal fossa
Where are anal sacs located?
Between the internal and external anal sphincters
The rectococcygeus is a smooth muscle continuation of what?
Rectum
What is the classical sign of anal glands becoming excessively full?
Scooting
How should anal glands be expressed?
Do dorsomedially
Mostly externally
Then do remainder internally - be gentle as painful (lubricate) and explosive
If anal sac secretions are purulent, what should you do?
Flush them with an IV catheter and hibiscrub
Perineal hernias can arise due to weakening of what? What does this result in?
Weakened perineal muscles (make up pelvic diaphragm)
Results in protrusion of rectum through pelvic diaphragm
What neuromuscular bundle is found in the perineal dissection?
Pedundal neurovascular bundle - contains pedundal nerve and internal pedundal vessels
Where is the sacrotuberous ligament found between?
From sacrum to ischial tuberosity
What is a herniorrphaphy?
Surgical repair of the pelvic diaphragm
The internal anal sphincter is not very distinct. What is it an enlargement of? What type of muscle is it (shape and smooth or skeletal)?
Anal canal
Smooth circular muscle
