Anus
Definition
The anus is the terminal end of the digestive tract where feces are expelled from the body. It plays a crucial role in the excretion process and is involved in maintaining gut health.
5 Must Know Facts For Your Next Test
- The anus contains two sphincters: an internal and an external sphincter, which control the release of feces.
- Normal microbiota of the anus include various bacteria such as Bacteroides, Firmicutes, and Escherichia coli.
- Anorectal infections can be caused by pathogens like Human Papillomavirus (HPV) and certain strains of Escherichia coli.
- Inflammatory conditions affecting the anus include hemorrhoids, anal fissures, and proctitis.
- Proper hygiene and understanding the normal microbiota are essential in preventing infections related to the anus.
Review Questions
- What are the primary functions of the internal and external anal sphincters?
- Which bacteria are commonly found as part of the normal microbiota in the anus?
- Name two common anorectal infections and their causative agents.
"Anus" appears in:
Related terms
Rectum: The final section of the large intestine, ending at the anus.
Escherichia coli: A common bacterium found in the gut that can be both harmless or pathogenic.
Proctitis: Inflammation of the lining of the rectum.
