the digestive system of a human being

1. DIGESTIVE SYSTEM
Father of this system = William Beaumont
Germ layer = endoderm

2. DIGESTIVE SYSTEM
ALIMENTARY TRACT
• Mouth
• Esophagous
• Stomach
• Small intestine
• Large intestine
• Rectum
• Anus
ACCESSARY ORGANS
• Salivary gland
• Pancreas
• Liver
• Gall bladder

3. Length of alimentary tract = 8 meter
Length of cadaver(after death) = 1+8
= 9 meter
[PROCESS OF DIGESTION]
INGESTION = Process of taking food into mouth
SECRETION = Per day secretion of digestive juice (7 L)
PROPULSION = Also known as peristalsis movement
( Rhythmic contraction and relaxation of smooth muscle)

4. DIAGESTION = Mechanical and chemical
ABSORPTION = When cell use the smallest food particle
EXCRETION = Waste product of digestive process

5. LAYERS OF DIGESTIVE SYSTEM
• Mucosa = Inner most layer
• Sub mucosa = Meissner plexus ( help in secretion)
• Muscularis = Myenteric / Auerbach’s plexus ( GI motility)
• Serosa / Adventitia = Outer most layer

6. ARTERIAL SUPPLY TO DIGESTIVE SYSTEM :
Celiac Artery
LEFT GASTRIC
ARTERY
COMMON
HEPATIC ARTERY
SPLEEN ARTERY
Stomach
Pancreas
Liver
Gall bladder
Spleen

7. Superior mesenteric
Artery
Inferior mesenteric
Artery
SMALL INTESTINE
Duodenum
Jejunum
Ilium
LARGE INTESTINE
Cecum
Colon
Rectum

8. VENOUS SUPPLY TO DIGESTIVE SYSTEM :
Gastric vein
Superior
mesenteric
vein
Inferior
mesenteric
vein
Splenic vein