Gastrointestinal system - Defecation reflex Flashcards
1
Q
Where is faeces stored?
A
Sigmoid colon
2
Q
What causes the defecation reflex
A
The mass movement of faeces into the sigmoid colon pressures the faeces into the rectum
3
Q
What two processes occur during defecation?
A
Contraction of rectum
Relaxation of internal and external anal sphincters
4
Q
What is the gastrocolic reflex?
A
Contraction of the rectum, and desire to defecate caused by the stomach being full
