Studied by 7 people
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Identify the organ
Esophagus
Identify the layers
Layers of Esophagus
A. Mucosa
B. Submucosa
C. Tunica muscularis
D. Tunica adventita
The projected sublayers are sublayers of the ______?
Mucosa (A)
Identify the sublayers
A. Lining Epithelium
B. Lamina Propria
C. Muscularis mucosa
Lining Epithelium of the organ
Stratified squamous non-keratinized epithelium
Lamina Propia of the organ
Loose Connective tissue with scattered lymphocytes
Muscularis mucosa of the organ
Single layer of smooth muscles
Identify the encircled structure
Superficial Esophageal glands
Identify the morphology of the encircled structure
Branched coiled glands
Identify the location of the encircled structure
Lower end of esophagus
Identify the fundamental type of tissue of B
Connective Tissue
Identify the subtype of B
Lymphatic Tissue or Connective Tissue Proper
Identify the specific subtype of B
Loose Lymphatic Tissue or Loose Connective Tissue
Divides the lamina propria from the submucosa
Muscularis mucosa (C)
Identify the pointed layer
Submucosa
Specific subtype of the pointed layer
Dense Irregular Connective Tissue
Secretes mucus in the submucosa for lubrication to facilitate the passage of food
Meissner’s plexus
What is the encircled structure?
Deep Esophageal glands
Function of the encircled structure
Mucus Secretion
What nerves plexuses are found in this area?
Meissner’s plexus
Identify the Layer
Tunica Muscularis (C)
How is this layer arranged?
Inner Circular and Outer Longitudinal (ICOL)
What is the upper third of this layer composed of?
Skeletal Muscles
What is the middle third of this layer composed of?
Skeletal and Smooth Muscles
What is the lower third of this layer composed of?
Smooth Muscles
What is the name of the nerve plexuses found in this area?
Auerbach’s/ Myenteric plexus
What is the function of the nerve plexuses found in this area?
Promotes motor/ peristaltic movement
Identify the layer
Tunica Adventita (D)
What is this structure composed of?
Loose Connective Tissue
What is present in this structure?
Blood and lymphatic vessels
Identify the pointed structure
Gastroesophageal Junction
What is the junction between the esophagus and the stomach?
Gastroesophageal Junction
Lining epithelium of the left side of this structure
Simple Columnar non-cornified epithelium
Lining epithelium of the right side of this structure
Stratified squamous non-cornified epithelium
Identify the Organ
Stomach
What does this organ produce to aid digestion
Digestive Enzymes
Label the layers of the organ
Layers of Stomach:
A. Mucosa
B. Submucosa
C. Tunica muscularis
D. Tunica serosa
Where layer are the gastric organs of the stomach located
Mucosa; specifically the lamina propia
Label
Where does the secretions of gastric glands come out?
Gastric Pits
Identify the layer
Mucosa (A)
Identify the first two structures (A and encircled) of the mucosa
A: Lining Epithelium
Encircled: Mucous Neck Cells
What is the lining epithelium of the organ?
Simple columnar epithelium without goblet cells
What is the encircled structure?
Mucous Neck Cells
What is the function of the encircled structure?
Produce a thick coating of mucus that protects the gastric mucosa from acid and enzyme secretion
Identify
Lamina Propia
The shown layer produces _______ occupying the entire thickness which opens into the bases of the gastric pits.
Gastric glands
Glands that are responsible for the synthesis and secretion of gastric juice
Gastric glands
What are the two major cell types in the stomach?
LEFT: Parietal/ Oxyntic Cell
RIGHT: CHIEF/ PEPTIC/ ZYMOGENIC CELL
Identify the structure
Parietal/ Oxyntic Cell
What does this structure secrete?
1. Hydrochloric acid
2. Intrinsic factor
Identify the structure
Chief/ Peptic/ Zymogenic Cell
What does this structure secrete?
1. Pepsinogen
2. Gastric lipase
A secretion of this structure that is activated into pepsin when it comes in contact with gastric acid
Pepsinogen
Lipase found in the stomach which also aids in the digestion of lipids
Gastric lipase
Which among the two cells is the parenchyma of the stomach?
Parietal/ Oxyntic Cell
Which among the two cells is more numerous in the stomach?
Chief/ Peptic/ Zymogenic Cell
Which among the two cells is basophilic in staining?
Chief/ Peptic/ Zymogenic Cell
Which among the two cells has a large round nucleus with eosinophilic cytoplasm
Parietal/ Oxyntic Cell
Identify the layer
Submucosa (B)
This layer is composed of?
Dense Irregular Connective Tissue
T OR F:
The layer has:
Meissner’s plexus
blood and lymphatic vessels
gastric glands
FALSE
There are no gastric glands present in this layer.
Identify the layer
Tunica Muscularis (C)
Arrangements of the layer
Smooth muscle arranged in 3 LAYERS:
1. Outer Longitudinal
2. Middle Circular
3. Inner Oblique
T OR F:
From the esophagus down to large intestine, except the stomach, the arrangement of tunica muscularis is ICOL
TRUE
The arrangement for the stomach is:
1. Outer Longitudinal
2. Middle Circular
3. Inner Oblique
What plexus is present
Myenteric/ Auerbach’s plexus
Identify the Main Organ
Small Intestine
Identify the three segments of the small intestine
Layers of the Wall of the Intestines (same for small and large)
Mucosa
Submucosa
Tunica Muscularis
Tunica Adventitia
Sublayers of the Mucosa (same for small and large)
Lining epithelium
Lamina propria
Muscularis mucosa
Lining Epithelium (same for small and large)
Simple columnar with goblet cells
Lamina propia (same for small and large)
Loose connective tissue
Muscularis mucosa (same for small and large)
2 thin layers of smooth muscle
Composition of the submucosa (same for small and large)
Dense connective tissue with BV, LV, and Meissner’s plexus
Nerve Plexus present in submucosa (same for small and large)
Meissner’s plexus
Arrangement of Tunica Muscularis (same for small and large)
Inner Circular Outer Longitudinal (ICOL)
Nerve Plexus present in Tunica Muscularis (same for small and large)
Auerbach’s plexus
Composition of Tunica Adventitia (same for small and large)
Loose connective with BV, LV, and nerve
Identify the encircled structure
NOTE: present in both small and large intestine
Intestinal Gland(s)
Label
NOTE: present in both small and large intestine
Another term for the encircled structure
Crypts of Lieberkuhn
What specific layer are these structures found
Lamina Propia
Four Cells of Intestines/ Intestinal Gland
1. Columnar cells (enterocytes)
2. Goblet cell
3. Paneth cell
4. Argentaffin cell/ Enteroendocrine cell (not seen in staining)
Which cell is the parenchyma
Columnar cells (enterocytes)
Which cell is the most numerous
Columnar cells (enterocytes)
Mucin producing epithelial cells
Goblet Cell
Which cell is pyramidal in shape
Paneth Cell
Which cell is found at the base of the glands
Paneth Cell
Which cell is highly acidophilic
Paneth Cell
Which cell precipitate silver salts
Argentaffin cell/ Enteroendocrine cell
Which layer are these cells found
Mucosa; specifically Lamina Propia
Identify the Segment
Duodenum
Identify the encircled structure
Brunner’s/ Duodenal Gland
Where is the encircled structure found
Submucosa
Function of the encircled structure
produces an alkaline fluid composed of mucin, protecting it from the acidic chyme of the stomach
Identify the segment
Jejunum
Characteristic feature of the segment
prominent and numerous plicae circularis
Identify the encircled structure
plicae circularis
Function of the encircled structure
To increase the amount of surface area available for nutrient absorption
Identify the segment
Ileum
Note 
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