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13 Cards in this Set
- Front
- Back
"What type of cell is indicated by the green arrow?
What function does it perform?" |
"That is a goblet cell, a mucous-secreting epithelial cell.
You can differentiate it from the neighbouring ciliated lining cells because the goblet cells don't have the cilia and are kinda chunky." |
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What type of cell is indicated by the green arrow?
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Ciliated epithelial cells.
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What is the thin layer indicated by the white arrow called?
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The basement membrane.
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Which layer of the trachea is indicated by the white arrow? What is it composed of?
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"The cartilaginous layer, made of hyaline cartilage, which is characterized by an absence of vascularity.
You cannot see collagen on these preparations because it's obscured by ""the ground substance.""" |
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What structure is indicated by the red circle?
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A Bronchus.
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How can you distinguish a bronchus from a bronchiole?
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"The presence of cartilage, identified with the ground substance, indicated by the red arrow.
Bronchioles also lack any submucosal glands." |
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"What layer of the bronchus is indicated by the arrow?
What types of cells does it contain?" |
"The lining epithelium (of the mucosa layer).
It consists of pseudostratified columnar epithelium, composed of ciliated lining cells and goblet (secreting) cells. (also, other epithelial cell types)" |
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What is the function of the cilia lining the bronchus?
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These cilia are smaller than higher up the respiratory tract, but they perform the same function, clearing mucus upwards.
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What feature of the bronchus is indicated by the red arrow?
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Smooth muscle, in the muscularis mucosa portion of the mucosa layer.
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What structure is indicated by the green circle?
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A bronchiole.
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What layer of the bronchiole is indicated by the red arrow?
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The epithelial cells of the mucosa layer.
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What layers are present in the wall a bronchiole?
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"1. The mucosa, consisting of the epithelium, the lamina propria (loose connecting tissue), and the muscularis mucosa (smooth muscle);
2. Submucosa; 3. Adventitia. The Submucosa and Adventitia are adjacent thin connective tissue layers." |
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Identify the structure indicated by the blue arrow.
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An alveolus.
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