ANATOMY

Detailed explanation-1: -The mucus layer traps pathogens (potentially infectious microorganisms) and other particles, preventing them from reaching the lungs. Cilia beat more than 1, 000 times a minute, moving the mucus that lines the trachea upwards about 0.5 to 1 centimeter per minute (0.197 to 0.4 inch per minute).

Detailed explanation-2: -The mucus layer provides an essential first host barrier to inhaled pathogens that can prevent pathogen invasion and subsequent infection.

Detailed explanation-3: -The respiratory system is lined with a mucous membrane that secretes mucus. The mucus traps smaller particles like pollen or smoke. Hairlike structures called cilia line the mucous membrane and move the particles trapped in the mucus out of the nose.

Detailed explanation-4: -Mucus removal is aided by the coordinated beating of tiny hairlike projections (cilia) that line the airways. The cilia sweep the mucus up the airways, away from the lungs., and intestinal secretions. These substances can kill bacteria or prevent them from multiplying.

Detailed explanation-5: -Mucus secretion by goblet cells mediates delivery of intestinal material to dendritic cells. Goblet cells and their produced mucus is part of our innate immunity and intimately linked to the adaptive immune system.