Anatomy Flashcards
The rectum contains what cell type as compared to the anus. What are the borders of each?
The rectum contains columnar epithelium and spans the distance between the sigmoid colon and the anus.
The anus is stratified squamous epithelium and begins where the levator ani attaches and includes both the internal and external anal sphincters.
The pectinate line is superior, inferior, anterior or posterior to the anal valve?
Inferior
The levator ani contains which three muscle groups?
Puborectalis
Pubococcygeous
Iliococcygeus
At the anorectal junction there is a perineal flexure made by what muscle?
puborectalis
What structure lines between the anal columns?
Anal sinuses the inferior border of which are the anal valves.
pectinate line is also known as?
dentate line
The right common iliac artery supplies the internal pudendal artery T/F?
False
IT supplies the middle rectal artery via the right and left internal iliac arteries.
The superior rectal artery is a branch of what?
Inferior messenteric artery
the superior and inferior rectal veins drain where?
Superior drains into the IMV then the portal vein
Inferior drains into the internal iliacs, common iliacs, and then IVC.
Lymphatic drainage above the dentate line goes where?
Internal iliac and IMA LN
The pudendal nerve is which of the following
Sympathetic
Parasympathetic
somatic
Enteric
Somatic and innervates the anal sphincters via the inferior anal rectal nerve branches.
WTF are hemorrhoids?
Enlarged veins
What are some hemorrhoidal treatments?
Sclerosing agent is injected into them or a band is wrapped around them.
The tendinous arch (arcus tendineus) separates which muscles of the pelvis?
Obturator internus and the iliococcygeus muscles
Which vessels are contained in the canal between the ischiorectal fossa nd the obturator internus muscle?
This is the pudendal canaal and contains these vessels and nerves.
