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Digestive Anatomy
Digestive Organs Outside the Digestive Tract
I). Liver
A). Divided into 4 lobes i). Anterior & Posterior Surface a). Right Lobe b). Left Lobe falciform ligament ii). Inferior Surface only a). Caudate Lobe b). Quadrate Lobe B). Blood vessels i). Hepatic Artery Celiac Trunk ® Common hepatic artery ↓ ↓ ↓ ↓ Hepatic Artery stomach duodenum pancreas ii). Hepatic Veins iii). Hepatic Portal Vein (comes from the intestine) Inferior mesenteric vein & Splenic vein ↓ Hepatic portal system
A). Divided into 4 lobes
i). Anterior & Posterior Surface a). Right Lobe b). Left Lobe falciform ligament ii). Inferior Surface only a). Caudate Lobe b). Quadrate Lobe
i). Anterior & Posterior Surface
a). Right Lobe b). Left Lobe falciform ligament
a). Right Lobe
b). Left Lobe
falciform ligament
ii). Inferior Surface only
a). Caudate Lobe b). Quadrate Lobe
a). Caudate Lobe
b). Quadrate Lobe
B). Blood vessels
i). Hepatic Artery Celiac Trunk ® Common hepatic artery ↓ ↓ ↓ ↓ Hepatic Artery stomach duodenum pancreas ii). Hepatic Veins iii). Hepatic Portal Vein (comes from the intestine) Inferior mesenteric vein & Splenic vein ↓ Hepatic portal system
↓ ↓ ↓ ↓
Hepatic Artery stomach duodenum pancreas
C). Common Hepatic Duct D). Liver Histology
C). Common Hepatic Duct
D). Liver Histology
i). Liver Lobules
ii). Hepatocytes:
liver sinusoids
iii). Central Vein
iv). Portal Triad a). hepatic portal artery, b). hepatic portal vein c). bile duct v). Bile Canaliculi
iv). Portal Triad a). hepatic portal artery, b). hepatic portal vein c). bile duct
iv). Portal Triad
a). hepatic portal artery, b). hepatic portal vein c). bile duct
a). hepatic portal artery,
b). hepatic portal vein
c). bile duct
v). Bile Canaliculi
C. Function of the Liver
1). Chemical Digestion Filters and processes nutrient-filled blood. 2). Absorption Functions of hepatocytes i). Process blood borne nutrients ii). Store fat soluble vitamins iii). Detoxification D. Bile 1). Functions to: a). emulsify lipids b). neutralizes stomach acid, c). excretes pigments 2). Composition of bile a). aid in digestion b). do not aid in digestion 3). Creation of Bile
1). Chemical Digestion Filters and processes nutrient-filled blood. 2). Absorption Functions of hepatocytes i). Process blood borne nutrients ii). Store fat soluble vitamins iii). Detoxification
Filters and processes nutrient-filled blood.
i). Process blood borne nutrients
ii). Store fat soluble vitamins iii). Detoxification
1). Functions to: a). emulsify lipids b). neutralizes stomach acid, c). excretes pigments 2). Composition of bile a). aid in digestion b). do not aid in digestion 3). Creation of Bile
a). emulsify lipids b). neutralizes stomach acid, c). excretes pigments
a). aid in digestion
b). do not aid in digestion
3). Creation of Bile
a). Start at the triad
i). Hepatic artery ii). Hepatic vein iii). Bile Duct
b. Process of processing blood
Cholecystokinin (CCK) is releases bile
4. Function of Bile in Fat Digestion Bile salts emulsify the fats to make the lipid soluble in water.
Mneumonic Bile Breaks fat into Blobs.
Mneumonic
Bile Breaks fat into Blobs.
II). Gall Bladder
http://harv.rcat.utoronto.ca/cyber_anatomy/HTML/gallBladder.html A. Antomy Cystic duct ----> bile duct, --> hepatopancreatic sphincter---> small intestine
http://harv.rcat.utoronto.ca/cyber_anatomy/HTML/gallBladder.html
A. Antomy
Cystic duct ----> bile duct, --> hepatopancreatic sphincter---> small intestine
B. Movement of bile
liver
ä
common hepatic duct
gall bladder
cystic duct
bile duct
hepatopancreatic sphincter
small intestine
C. Histology
III). Pancreas
A. Anatomy 1). Pancreatic Duct 2). Acinar Cells
A. Anatomy
1). Pancreatic Duct 2). Acinar Cells
1). Pancreatic Duct
2). Acinar Cells
B. Histology Acinar Cells Isles of Langerhans Ducts http://www.siumed.edu/~dking2/erg/GI138b.htm
B. Histology
http://www.siumed.edu/~dking2/erg/GI138b.htm
C). Pathway for pancreatic juice produced in the acinar cells
small ducts ä
small ducts
pancreatic duct
D). Components of Pancreatic Juice 1). Water 2). Bicarbonate ions 3). Enzymes
1). Water 2). Bicarbonate ions
1). Water
2). Bicarbonate ions
3). Enzymes
E. Function of Pancreatic Enzymes 1. Trypsin 2. Chymotrypsin 3. Carboxypeptidase 4. Amylase 5. Lipases 6. Nucleases
1. Trypsin 2. Chymotrypsin 3. Carboxypeptidase 4. Amylase 5. Lipases 6. Nucleases
2. Chymotrypsin
3. Carboxypeptidase
5. Lipases
6. Nucleases
