Something that is not meant to be there and generally causes harm or reduces performance.
Mucus secreted by goblet cells trap the foreign particles. Cilia push the particles out wards. This protects your lungs from damage by the foreign particles.
Foreign particles are primarily removed from the body through the immune system and various physiological mechanisms. The respiratory system uses cilia and mucus to trap and expel inhaled particles. In the gastrointestinal tract, foreign materials can be eliminated through digestion and excretion. Additionally, immune cells like macrophages and neutrophils identify and engulf foreign particles, facilitating their removal from tissues and the bloodstream.
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Mucus is the secretion produced by the respiratory system that traps dust and other inhaled foreign particles. It helps to protect the lungs by capturing these particles before they can reach deeper into the respiratory tract.
digestion
The cause is the electrostatic attraction between ions and these particles.
White blood cells, particularly phagocytes like macrophages and neutrophils, are responsible for engulfing and digesting foreign particles, pathogens, and cellular debris. However, reticulocytes are immature red blood cells, not foreign particles; they are part of the normal process of erythropoiesis. While white blood cells do play a role in clearing damaged or dying cells, their primary function is to combat infections and protect the body from foreign invaders. Thus, while they can interact with reticulocytes, their main role is not to target them as foreign particles.
covering your vocal chords so the no foreign particles get into your trachea
mucus
Something that is not meant to be there and generally causes harm or reduces performance.
This is a neutrophil.
Goblet cells in the trachea produce mucus that helps to trap and remove foreign particles and pathogens from the airways. Cilia are hair-like structures that line the trachea and sweep the trapped particles and mucus up and out of the respiratory system toward the throat to be swallowed or expelled through coughing. Together, goblet cells and cilia help to protect the lungs from harmful substances.