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Digestive System, Digestive Tract Histology - Lecture Slides | SPMD 201, Study notes of Geriatrics

Material Type: Notes; Professor: Armstrong; Class: Human Anatomy for Sports Med; Subject: Sports Medicine; University: Eastern Michigan University; Term: Unknown 1989;

Typology: Study notes

2009/2010

Uploaded on 02/24/2010

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Digestive System
SPMD 201
Digestive System
mouth
pharynx
esophagus
stomach
small intestine
large intestine
teeth
tongue
salivary glands
liver
pancreas
gallbladder
Digestive tract: Accessory organs:
Digestive Tract Histology
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Digestive System

SPMD 201

Digestive System

  • mouth
  • pharynx
  • esophagus
  • stomach
  • small intestine
  • large intestine
    • teeth
    • tongue
    • salivary glands
    • liver
    • pancreas
    • gallbladder

Digestive tract: (^) Accessory organs:

Digestive Tract Histology

SPMD 201

Oral Cavity

  • Mouth or oral cavity
    • Vestibule: Space between lips or cheeks and alveolar processes
    • Oral cavity proper
  • Lips (labia) and cheeks
  • Palate: Oral cavity roof
    • Hard and soft
  • Palatine tonsils
  • Tongue: Involved in speech, taste, mastication, swallowing

SPMD 201

Teeth

  • Two sets
    • Primary, deciduous, milk: Childhood
    • Permanent or secondary: Adult (32)
  • Types
    • Incisors, canine, premolar and molars

SPMD 201

Salivary Glands

Three pairs

  • Parotid: Largest
  • Submandibular
  • Sublingual: Smallest

SPMD 201

Stomach Histology

Layers

  • Serosa or visceral peritoneum: Outermost
  • Muscularis: Three layers
    • Outer longitudinal
    • Middle circular
    • Inner oblique
  • Submucosa
  • Mucosa

Stomach Histology

Rugae --Folds in empty stomach

Gastric pits --Openings for gastric glands

SPMD 201

Small Intestine

  • Primary role in the ingestion and absorption of nutrients (90%).
  • 3 subdivisions: --duodenum--“mixing bowl” --jejunum-- site of most chemical digestion and absorption --ileum

SPMD 201

Small Intestine

Transverse folds ( plicae circulares ) and small projections ( intestinal villi ) increase surface area for absorption.

Intestinal juices moisten the chyme, help buffer acids, and hold enzymes and products of digestion in solution.

Duodenum Anatomy and

Histology

SPMD 201

Liver

Lobes

  • Major: Left and right
  • Minor: Caudate and quadrate Ducts
  • Common hepatic
  • Cystic
    • From gallbladder
  • Common bile
    • Joins pancreatic duct at hepatopancreatic ampulla

Fig. 24.

Large Intestine