Alveoli or alveolar sac are present in lungs.They are also called as air sacs. The alveoli of lungs provide a large surface area for gaseous exchange. The number of alveoli in human lungs has been estimated to be approx. 300 million. The rich network of capillaries surrounding them help in exchange of gases. Both alveolar wall and capillary wall are made of squamous epithelium. It allows the exchange of gases according to their partial pressure differences.
Heyo the answers to the multiple choice are A B B A C A C D A C B D D B B C C A D B I'll have the essay questions and fill in the blanks after my test is graded or you can just look them up.
Food irradiation is a process in which the food is exposed to the treatment of radiations. This helps in increasing shelf life and decreasing the colonization of the pathogens on the food. This process does not make the food radioactive.
Man Ray Created this piece using the Rayograph. It was considered as abstract art. This type of photography was Surrealism. Meaning it didnt really exist in the world. This picture was created by placing objects on light sensitive film and exposing it with an enlarger. He had exposed his face on one side, then the other.
