Changes

===Carnivore===

===Carnivore===

The dog and cat posses two '''anal sacs'''. In the dog, these are the size of a hazlenut. They are located ventrolaterally between the internal and external anal sphincters. They are large, coiled apocrine tubules that have many '''tubuloalveolar glands''' in their walls. These '''tubuloalveolar glands''' produce a fatty secretion. The '''fundus''' of the sac secretes a potent smelling fluid that drains through a single duct to an opening near the '''anocutaneous juncntion'''.

The dog and cat posses two '''anal sacs'''. In the dog, these are the size of a hazlenut. They are located ventrolaterally between the internal and external anal sphincters. They are large, coiled apocrine tubules that have many '''tubuloalveolar glands''' in their walls. These '''tubuloalveolar glands''' produce a fatty secretion. The '''fundus''' of the sac secretes a potent smelling fluid that drains through a single duct to an opening near the '''anocutaneous junction'''.

 

The anal sacs get compressed during defecation, which causes the fluid to be expressed. The scent of the fluid is thought to act as a territorial marker.

The anal sacs get compressed during defecation, which causes the fluid to be expressed. The scent of the fluid is thought to act as a territorial marker.

Anal sacs are clinically important as they are commonly diseased in dogs - frequently, they become enlarged due to accumulated secretion. The '''dog''' has '''perianal glands''' that lie in the skin surrounding the anus. They are modified sebaceous glands.

 

Anal sacs are clinically important as they are commonly [[Anal Sac Disease - General|diseased]] in dogs - frequently, they become enlarged due to accumulated secretion. The '''dog''' has '''perianal glands''' that lie in the skin surrounding the anus. They are modified sebaceous glands.

===Equine===

===Equine===

==Links==

==Links==

'''Click here for information on the[[Intestines, Small and Large - Pathology|pathology Of The Small and Large Intestines]].'''

'''Click here for information on the [[Intestines, Small and Large - Pathology|Pathology Of The Small and Large Intestines]].'''

[[Category:Large Intestine - Anatomy & Physiology]]

[[Category:Large Intestine - Anatomy & Physiology]]

[[Category:To Do - Review]][[Category:To Do - AP Review]]

[[Category:A&P Done]]