ANAT2241 Gastro-Intestinal System

From Embryology
ANAT2241 This practical support page content is not part of the virtual science practical class and provides additional information for student self-directed learning purposes. 2018 - Moodle ANAT2241 | Virtual slides

General Objectives

  1. To know the histological features and functions of the oral cavity and its associated structures.
  2. To know the general organization of the alimentary tract and the histological features of its various anatomical subdivisions: oesophagus, stomach, duodenum, small intestine, large intestine, appendix and rectum.

Specific Objectives

  1. To know the microanatomy of the tongue, including epithelial types, muscles, glands, papillae and taste buds.
  2. To know the histological features of the submandibular and parotid glands.
  3. To know the general architecture of the wall of the alimentary tract and the functions of the mucosa, submucosa, muscle layer and serosal or adventitial layer in the various anatomical divisions of the canal.
  4. To know the structure of the oesophagus, cardio-oesophageal junction and stomach wall.
  5. To identify the cells of gastric epithelium and distinguish the histological features of the cardiac, body and pyloric regions of stomach. To appreciate the role of mucous on the surface of gastric epithelium.
  6. To know the histological features of the duodenum and ileum, including villi, intestinal mucosal glands (crypts of Lieberkuhn), lymphatic tissue and intramural nerve plexuses.
  7. To know the structure of the large intestine, appendix and rectum.

Learning activities

Mouth, oesophagus & stomach

Note: The lip and soft palate have already been studied and will not be repeated here. You are reminded however, that they are part of the oral structure.

Virtual Slides: Gastro-Intestinal System I | Gastro-Intestinal System II | Liver, Gallbladder, and Pancreas

Oesophagus

Oesophagus histology 01.gif

Stomach

Stomach gastric gland distribution


Stomach Histology Links: stomach labeled overview | parietal cells - chief cells | mucus neck - parietal cells - chief cells | stomach overview | stomach mucosa | mucosa - secretory epithelial sheath - goblet cell | gastric glands - parietal cells - chief cells | stomach overview | Stomach Histology | Stomach Development | Gastrointestinal Tract Development

Intestine

Intestine villi and crypts
Intestine Histology Links: Duodenum overview | Duodenum villi and crypts | Duodenum | Jejunum overview | Jejunum villus | Jejunum labeled | Jejunum unlabeled | Gastrointestinal Tract Histology | Intestine Development

Colon

Colon Histology Links: Ano-Rectal Junction Overview Labeled | Colon Wall Labeled | Colon Mucosa Labeled | Colon Overview | Ano-Rectal Junction Overview | Intestinal Gland - longitudinal van Gieson | Intestinal Gland - transverse van Gieson | Intestinal Gland - longitudinal H&E | Intestinal Gland - transverse H&E | GIT Histology | Gastrointestinal Tract Development


Course Links

Histology Glossary: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ANAT2241 Support | Histology | Histology Stains | Embryology Glossary
Common Histology Stains  
Histology Stains - Common Stains and Their Reactions
Stain
Nucleus
Cytoplasm
Collagen
RBCs
Other
Haematoxylin
blue
-
-
-
mucins - light blue
Eosin
-
pink
pale pink
bright red
colloid - pinkmuscle - red
Iron Haematoxylin
blue/black
-
-
-
Van Gieson
-
brown/yellow
red
yellow
muscle: yellow/browncartilage - pink
Verhoeff's Elastin
black
-
-
-
elastic fibres - black
Tartrazine
-
yellow
yellow
yellow
Silver Impregnation
-
-
grey/brown
-
reticular fibres - black
Methyl Green
dark green
light green
light green
green
Nuclear Fast Red
red
pink
pink
pink
Gomori's Trichrome
purple/red
purple
green
red
keratin - redmuscle - purple/red
Heidenhain's Azan
red
purple/red
deep blue
red
muscle - red
Osmium Tetroxide
-
-
brown
brown
myelin, lipids - black
Alcian Blue
-
-
-
-
mucins, - blue
Periodic acid-Schiff (PAS)
-
-
pink
-
mucins, glycogen, glycocalyx - magenta
Phosphotungstic Acid-Hematoxylin (PTAH)
blue
-
red
blue
muscle bands - blue
Masson's Trichrome
blue/black
red
green/blue
red
cartilage, mucins - blue or green; muscle - red
Luxol Fast Blue
-
-
-
variable
myelin - blue
Aldehyde Fuchsin
-
-
-
-
elastic fibres, mast cells - deep purple
Light Green
-
-
light green
-
Gallocyanin
dark blue
-
-
-
nucleic acids, Nissl granules - dark blue
Romanowsky (e.g. Leishman's)
blue
pink
acidophils - red, basophils - blue, azurophilic - purple
Aldehyde Pararosanilin elastic fibres - purple
Haematoxylin and Eosin
One of the most common staining techniques in pathology and histology. Acronym "H and E" stain. (H&E, HE).


Haematoxylin
  • Stains nuclei blue to dark-blue.
  • Stains the matrix of hyaline cartilage, myxomatous, and mucoid material pale blue.
  • Stains myelin weakly but is not noticeable if combined with eosin stain.
  • combined with Orange G (H & Or. G.) instead of eosin, specifically stains the granules of acidophilic cells of the adenohypophysis (anterior pituitary).
Eosin
  • Stains cytoplasm pink to red; red blood cells are also bright red.
  • Common counterstain to hematoxylin.
  • Stain intensity varies with the formula as well as the fixative.

Virtual slides

Moodle - ANAT2241 - 2018

Pages require student zpass to access.

The Virtual Microscope | Covering and Lining Epithelia | Glandular Epithelia | Connective Tissue Components | Connective Tissue Types | Bone, Bone Formation and Joints | Blood | Muscle Tissue | Nervous Tissue | Cardiovascular System | Respiratory System | Integumentary System (skin) | Liver, Gallbladder, and Pancreas | Gastro-Intestinal System I | Gastro-Intestinal System II | Lymphatic Tissue and Immune System | Endocrine System | Urinary System | Female Reproductive System | Male Reproductive System | Special Sense Organ: The Eye


Practical support

Pages can be accessed from any internet connected computer.

ANAT2241 Support Links: The Virtual Microscope | Covering and Lining Epithelia | Glandular Epithelia | CT Components | CT Types | Bone, Bone Formation and Joints | Blood | Muscle | Nervous | Cardiovascular | Respiratory | Integumentary | GIT Organs | GIT 1 | GIT 2 | Lymphatic and Immune | Endocrine | Urinary | Female Reproductive | Male Reproductive | Eye | Histology Stains | Histology Drawings | Practicals Health and Safety 2013 | Moodle - 2018


ANAT2241 This practical support page content is not part of the science practical class and provides only background information for student self-directed learning purposes.


Cite this page: Hill, M.A. (2018, December 12) Embryology ANAT2241 Gastro-Intestinal System. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/ANAT2241_Gastro-Intestinal_System

What Links Here?
© Dr Mark Hill 2018, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G