Pectinate Line Flashcards
1
Q
Arterial supply for above pectinate line?
A
Superior rectal artery (off of IMA)
2
Q
Venous drainage for above pectinate line?
A
Superior rectal vein –> IMV –> Portal system
3
Q
Above pectinate line can have what 2 disorders?
A
- Internal hemorrhoids (not painful due to VISCERAL innervation
- Adenocarcinoma
4
Q
Arterial supply for below pectinate line?
A
Inferior rectal artery
5
Q
Venous drainage for below pectinate line?
A
Inferior rectal vein –> Internal pudendal vein –> Internal iliac vein –> Common iliac vein –> IVC
6
Q
Lymph drainage from above pectinate line?
A
Internal iliac lymph nodes
7
Q
Lymph drainage from below pectinate line?
A
Superficial inguinal nodes
8
Q
What three disorders can occur below the pectinate line?
A
- External hemorrhoids (painful due to somatic innervation)
- Anal fissures
- Squamous cell carcinoma
9
Q
Innervation above pectinate line?
A
Pelvic splanchnic nerve
10
Q
Innervation below pectinate line?
A
Inferior rectal branch of pudendal nerve
