Summary ALIMENTARY AND BILIARY CONDITIONS 3-1

GASTROINTESTINAL &
BILIARY TRACT
DISORDERS (22 HRS)



BLOCK III, M14 CLASS - KRCHNAUGUST 2015
FACILITATOR: M. ONYANGO

,OBJECTIVES
 Recall the anatomy and physiology of the GIT
and related structures
 Describe common manifestations in a patient
with GIT disorders
 Describe the assessment of a patient suffering
from GIT disorders
 Describe diseases/conditions of the GIT and
their management
 Describe diseases/conditions of the biliary
tract and their management

, Review of GIT
 Includes GIT and accessory digestive organs (teeth,
tongue, salivary glands, liver, gallbladder, and pancreas).
 Digestion includes 6 basic processes:
ingestion,
secretion,
mixing and propulsion,
mechanical & chemical digestion,
absorption,
defecation
 Histology: most of GIT, from deep to superficial;
mucosa,
submucosa,
muscularis,
Adventitia (serosa)

,  Inervation
Enteric Nervous System (ENS) and
Myenteric orAuerbach's plexus , (muscularis):- regulates GI
tract motility
Submucosal or Meissner's plexus, (submucosa):- regulates GI
secretion
Autonomic Nervous System (ANS).
Parasympathetic fibers of the Vagus (X) & Spinal nerves :-
increase GI secretion & motility
Sympathetic fibers from thoracic & upper lumbar regions:-
decrease GI secretion & motility

 Blood supply
Esophagus: esophageal arteries
Abdominopelvic organs: coeliac artery and thesuperior
andinferior mesenteric arteries
 Drainage
Esophagus: esophageal veins
Abdominopelvic organs: portal vein
Lower rectum and the anus: internal iliac veins