How are pathogens trapped by and expelled from the respiratory system?

    Another defense are the microscopic hairs in the trachea, these are called cilia and are there to stop pathogens being taken into the body, so they get trapped and can be expelled by the mucus. Pathogens can enter the body through the respiratory system. Pathogens that cause influenza, tuberculosis and bronchitis infect in this way.

Pathogens can enter the body through the respiratory system. Pathogens that cause influenza, tuberculosis and bronchitis infect in this way. However the respiratory system has defenses to trap these pathogens and expels them. The first is mucus in the throat, this is a thick gooey like substance produced by the goblet cell, it is there to catch up the pathogens and it can be coughed up. Another defence are the microscopic hairs in the trachea, these are called cilia and are there to stop pathogens being taken into the body, so they get trapped and can be expelled by the mucus.

Hunting in the darksome fish rely on senses beyond sight. in the darkness of the marianas trench, a fish called the rattail has an extremely sensitive sense of smell. the fish uses scent, rather than sight, to steer toward food. once it's near food, the rattail uses a special organ on the bottom of its chin to guide itself by feel.marine snowone staple of the deep sea diet is "marine snow," flakes of organic, edible substances that sink down from the upper ocean. animals at the ocean's bottom find sustenance in everything from the bodies of dead creatures to fecal matter. marine snow is diverse enough to support numerous species. for instance, several species of snails and worms feed exclusively on deceased whales.microorganismsthe deep sea is an intricate ecosystem, and even the ocean floor itself plays a part. hydrothermal vents are cracks in the sea floor where erupting magma mixes with ocean water to produce plumes of hot, sulfur-rich chemicals. some microbes can use these chemicals for energy, sustaining their existence and that of the animals who depend on their roles in the deep sea food chain.

C) they are specialized meaning they are designed to do different things