19. Which statement about epithelium is correct? It traps dust, pollen, and other particles.
It is thin tissue that lines the alveoli
It closes the windpipe when swallowing
It warms and humidifies inhaled air

Brian has a medical condition called cone dystrophy, which is a disorder of the cone cells in the eye. what symptoms would you expect brian to have? a. inability to see in the dark b. difficulty determining colors c. difficulty determining shapes and outlines d. inability to see in all light conditions