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.
<span>A dangerous cargo manifest is most commonly
associated with the Water mode of transportation. Anyone who would like to
ships any materials that are hazardous in a vessel must arrange a Dangerous
Cargo Manifest (DCM) or sometimes called the stowage plan for those hazardous materials.</span>
Answer: I think it is uplifting movement theory
Explanation:
I am learning about this stuff in my class.
7. b and 8. c i attached the photo for u to see how i did it
The correct answer is C minerals -apex
