Related Experiment Video
Updated: May 5, 2026

In Vitro Recording of Mesenteric Afferent Nerve Activity in Mouse Jejunal and Colonic Segments
Published on: October 25, 2016
Anorectal physiology and pathophysiology in the elderly
Siegfried W B Yu1, Satish S C Rao
1Division of Gastroenterology and Hepatology, Medical College of Georgia, Georgia Regents University, 1120 15th Street, Augusta, GA 30912, USA.
Elderly anorectal disorders stem from age-related biophysiologic changes affecting anal sphincter function and neurobiology. Understanding these changes is key for accurate diagnosis and effective treatment of conditions like fecal incontinence and constipation.
Area of Science:
- Gerontology
- Gastroenterology
- Anorectal Physiology
Background:
- Anorectal disorders are prevalent in the elderly, impacting quality of life.
- Common conditions include fecal incontinence, constipation, and hemorrhoids.
- Age-related physiological changes contribute significantly to these disorders.
Purpose of the Study:
- To review recent advancements in understanding age-related anorectal changes.
- To explore the impact of these changes on the pathophysiology of common anorectal disorders in older adults.
- To emphasize the importance of functional anatomy and pathophysiology in diagnosis and treatment.
Main Methods:
- Literature review of recent scientific advances.
- Discussion of age-related changes in anal sphincter morphology and function.
- Analysis of cellular, molecular, and neurobiological alterations.
Main Results:
- Identified age-related changes in anal sphincter structure and function.
- Highlighted alterations in cellular/molecular biology and neurotransmitter pathways.
- Linked these biophysiologic changes to the pathophysiology of elderly anorectal disorders.
Conclusions:
- Age-related biophysiologic changes are central to the development of anorectal disorders in the elderly.
- A thorough understanding of functional anatomy and pathophysiology is crucial for effective clinical management.
- This knowledge facilitates appropriate diagnosis and targeted treatment strategies.
Related Concept Videos
Assessment of the Rectum and Anus
Rectal Inspection
Begin by inspecting the perianal and anal areas for color, texture, rashes,...
Drug Dosing: Geriatric Patients
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion
Pharmacodynamics in Geriatric Patients: Effects of Age
Physiology of the Gastrointestinal System III: Elimination

