The Anal Triangle Flashcards
1
Q
describe the anal triangle
A
The anal triangle is the area between the ischial spines and coccyx. It contains the terminal part of the gastro-intestinal tract, the anus.
2
Q
Lateral to the anal canal and inferior to the pelvic floor are 2 fat containing fossa called the?
A
- ischio-anal (ischio-rectal) fossa
- these allow the anal canal to expand during defaecation
3
Q
A
4
Q
A neurovascular bundle enters the ischio-anal (rectal) fossae through the lesser sciatic foramen.
What structures are present in this bundle?
A
- pudendal nerve
- internal pudendal vessels
5
Q
A neurovascular bundle enters the ischio-anal (rectal) fossae through the lesser sciatic foramen.
What structures are present in this bundle?
Pudendal nerve
Internal pudendal vessels
What structures do these neurovascular structures supply?
A
- sensory: external genitalia, skin around anus, anal canal, perineum
- motor: external urethral sphincter, external anal sphincter
