Rectum - Anatomy & Physiology - Flashcards

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Question	Answer	Article
Describe the position of the rectum.	Dorsal to the reproductive organs, bladder and urethra	Link to Answer Article
How is the rectogenital pouch formed?	Reflection of the mesorectum onto the peritoneal peritoneum of the pelvic cavity	Link to Answer Article
How is defeaction stimulated?	Faeces in the rectum stimulate pressure sensitive cells which initiates the defeaction reflex	Link to Answer Article
How is the conscious sensation for the need to empty the bowel produced?	A forceful contraction of the rectum against the external anal sphincter	Link to Answer Article
What happens if the conscious need to empty the bowel is ignored?	The defeacation reflex is reduced until another mass movement occurs	Link to Answer Article
What is the type of epithelium in the rectum?	Columnar	Link to Answer Article
What happens to the epithelium at the recto - anal junction?	It changes from columnar to stratified squamous non-keratinised	Link to Answer Article
What type of muscle forms external anal sphincter?	Skeletal	Link to Answer Article
Which species appear to lack the ability to control the external anal sphincter?	Ruminants and equine species	Link to Answer Article

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