F211 Features of mammalian lung that adapt it to efficient gas exchange
- Created by: Remya Salimkumar
- Created on: 27-04-15 20:02
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- features of the mammalian lung that adapt it to
efficient gaseous exchange
- ALVEOLI
- thin squamous
- short diffusion distance
- one cell thick
- short diffusion distance
- Epithelial cells produce surfactant
- reduces tension and prevents collapse
- one cell thick
- thin squamous
- CILIATED EPITHELIAL CELLS
- Waft away mucus and dirt
- GOBLET CELLS
- Produces mucus to trap dust
- CILIATED EPITHELIAL CELLS
- Waft away mucus and dirt
- CILIATED EPITHELIAL CELLS
- Produces mucus to trap dust
- CARTILAGE
- holds airway open
- SMOOTH MUSCLE
- Constricts and controls diameter of airway
- ELASTIC FIBRES
- recoil, aiding ventilation by expelling air out
- VENTILATION
- Increase [O2] in alveoli so higher than in blood
- maintains good conc. gradient--> efficient diffusion
- Decrease [CO2] in alveoli so lower than in blood
- maintains good conc. gradient--> efficient diffusion
- Decrease [CO2] in alveoli so lower than in blood
- Increase [O2] in alveoli so higher than in blood
- VENTILATION
- recoil, aiding ventilation by expelling air out
- ERYTHROCYTES
- transport O2 and CO2
- VENTILATION
- Increase [O2] in alveoli so higher than in blood
- maintains good conc. gradient--> efficient diffusion
- maintains good conc. gradient--> efficient diffusion
- Increase [O2] in alveoli so higher than in blood
- MACROPHAGES & NEUTOPHILS
- engulf and destroy pathogens
- ALVEOLI
- MACROPHAGES & NEUTOPHILS
- engulf and destroy pathogens
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