Odland bodies
Contents
Other Names
| Odland bodies – Also Called as | |
| 1 | Lamellar granules |
| 2 | Lamellar bodies |
| 3 | Membrane-coating granules (MCGs) |
| 4 | Keratinosomes |
Odland bodies primarily
A. Helps Structural support
B. Secretory organelles
C. Produce fibrocytes
D. Cause Pigmentation
Odland bodies are mostly found in
A. Type I pneumocytes
B. Type II pneumocytes
C. Alveolar macrophages
D. Dust cells
Which is stored in the lamellar bodies and serve as pulmonary surfactant after being released from the cell?
A. Phosphatidylinositols
B. Phosphatidylcholine
C. Phosphatidylethanolamine
D. Phosphatidylserine
Surfactant
Phosphatidylcholine molecules form 85% of the lipid in surfactant.
Phosphatidylglycerol forms about 11% of the lipids in the surfactant
Type II alveolar cells
Lipids diffuse from the blood into type II alveolar cells where they are assembled and packaged for secretion into secretory organelles called lamellar bodies
Strongest surfactant molecule
Dipalmitoylphosphatidylcholine (DPPC) is the strongest surfactant molecule in the pulmonary surfactant mixture.
Lamellar bodies are secreted from keratinocytes
In the upper stratum spinosum and stratum granulosum layers of the epidermis, lamellar bodies are secreted from keratinocytes, resulting in the formation of an impermeable, lipid-containing membrane that serves as a water barrier and is required for correct skin barrier function.
