What cell type secretes surfactant?
Alveolar type II cells secrete a lipoprotein material called surfactant, whose primary function is to reduce the surface tension in the alveoli.
What do alveolar type 1 cells do?
Type I alveolar cells are squamous extremely thin cells involved in the process of gas exchange between the alveoli and blood. Type II alveolar cells are involved in the secretion of surfactant proteins.
What is a primary function of transcription factors?
What is a primary function of transcription factors? They control gene expression.
What are inflammatory transcription factors?
Inflammatory transcription factors are involved in immune-to-brain communication. They show spatiotemporal brain activation patterns during systemic inflammation. They can be used as broad activation markers for various stimuli. They represent important therapeutic targets for anti-inflammatory treatments.
Where does gas exchange occur?
During gas exchange oxygen moves from the lungs to the bloodstream. At the same time carbon dioxide passes from the blood to the lungs. This happens in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.
What is the function of alveolar cells?
Alveoli
| Function | Exchange of oxygen and carbon-dioxide through the respiratory membrane |
|---|---|
| Alveolar cells | Type I pneumocyte (squamous alveolar cells with thin membrane; allow gas exchange) Type II pneumocyte (repair alveolar epithelium, secrete pulmonary surfactant) Alveolar macrophages |
What are the 3 cells that make up the alveoli?
Each alveolus consists of three types of cell populations:
- Type 1 pneumocytes.
- Type 2 pneumocytes.
- Alveolar macrophages.
Which of the following are involved in post transcriptional control?
Which of the following are involved in post-transcriptional control? Answer d. All of the above (control of RNA splicing, RNA shuttling, and RNA stability) are involved in post-transcriptional control.
Are transcription factors cytokines?
Here we discuss transcription factors involved in the regulation of cytokines and their receptors (interleukin-2, interleukin-2 receptor α chain, and interferon-β), as well as transcription factors that are activated by cytokines (interleukin-1, tumor necrosis factor, interferons, and transforming growth factor β).
How do transcription factors interact with DNA?
Transcription factors are proteins that help turn specific genes “on” or “off” by binding to nearby DNA. Transcription factors that are activators boost a gene’s transcription. Repressors decrease transcription.