Breathing and Exchange of Gases Test - 6

Osmoreceptors are sensory receptors that detect changes in osmotic pressure and contribute to maintaining fluid balance in the body.

For particles with an aerodynamic diameter less than 1 µm, Brownian diffusion is a major way for deposition in airways where the bulk flow is very low or absent.
 

It is a special organ of respiratory tract that is present in proximal region of trachea.
 

Vestibular folds are also known as false vocal chords. They are also called venticular folds. They are called false vocal cords because they are not involved in voice production.

It is the inflammation of pleural sacs due to excessive pleural fluid.
 

Breathing or pulmonary ventilation facilitates intake of atmospheric air and expulsion of alveolar air.
 

It is the largest cartilage. It is broad and C-shaped in outline, with a V-shaped notch on the superior edge.
There are two small elongated club-shaped nodules of elastic fibro cartilage which lie above and anterior to corniculate cartilage.

At the level of the fifth thoracic vertebra, trachea divides to form a left and right primary bronchi.
 

The cells which eliminate particles and microbes reaching the alveoli are called dust cells. These are also known as macrophages.
 

The movement of ribs and sternum facilitates the process of breathing.