Question

Define throat,RBC,alveoli,bronchioles​

Answer 1

Answer:

Within the lungs, the trachea branches into a left and right bronchus. These further divide into smaller and smaller branches called bronchioles. The smallest bronchioles end in tiny air sacs. These are called alveoli. They inflate when a person inhales and deflate when a person exhales.

Answer 2

Answer:

• Throat : the passage which leads from the back of the mouth of a person or animal.
• RBC (Red Blood Cells) : RBC's, also referred to as red blood cells, red blood corpuscles, haematodes, erythroid cells or erythrocytes, are the most common type of blood cell and the vertebrate's principal means of delivering oxygen to the body tissues - via blood flow through the circulatory system.
• Alveoli : Tiny air sacs at the end of the bronchioles (tiny branches of air tubes in the lungs). The alveoli are where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out.
• Bronchioles : The bronchioles or are the smaller branches of the bronchial airways in the respiratory tract.