What sorts of signals does the brain use to communicate sensations, thoughts and actions?note that this is not a multiple choice answer, and i will give brainiest, to the person who answers correctly. many !

This type of galaxy is an approximately ellipsoidal shape and a smooth, nearly featureless image. they are the largest single star systems, in the universe and are built by the collisions of many smaller galaxies.

Air enters through the nose (and sometimes the mouth), moves through the nasal cavity, the  pharynx, the  larynx, enters the  trachea, moves through the  bronchi  andbronchioles  till the alveoli.