The four important characteristics of respiratory surface are:
1. Thin walls
2. Moisture
3. Large surface area
4. Blood supply
Respiratory system or respiratory tract is divided into upper and lower tract. Upper respiratory tract includes nose and its cavities, sinuses, pharynx and the part of the larynx. Lower respiratory tract consists of the trachea, bronchi, bronchioles and the alveoli.
Alveoli are the ends of the respiratory tract the smallest units in it. Alveoli are small folded air sacs that are branching off from alveolar ducts and providing an extremely large surface area for the gas exchange. Gas exchange occurs thanks to small blood vessels – capillaries that surround alveoli and it occurs via the process of diffusion.
So, respiratory surface is thin membrane also known as the blood–air barrier that consists of the alveolar epithelial cells, their basement membranes and the endothelial cells of the alveolar capillaries.
Answer:Stormwater runoff is the result of snow melt or may be due to fall of rain flowing on the land surface. ... Stormwater that cannot be directed back into rivers or streams is stored in Retention basin. Retention basins allows water to seep through the soil and then into shallow groundwater aquifer. got offline
Explanation:
Answer :
Dark district is the counter codon locale and base sets with the mRNA
green is the T?C circle (ribouridine and pseudouridine)
Yellow is the 3' end which has CAA end which connects with the approaching amino corrosive.
Light blue is the anticodon circle
red is the DHU circle i.e. dihydrouridine circle
orange is the additional arm.
Purple area contains 5' end.
