AP BIOLOGY

Detailed explanation-1: -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-2: -Mucus is the sticky, slimy stuff that’s made inside your nose, airways, and even your digestive tract. If you’re like lot of kids, you have another name for nose mucus: snot. Your nose and sinuses make about a quart (about 1 liter) of snot every day.

Detailed explanation-3: -Mucus is a sticky substance made by cells in the lining of the airways. It traps dust, smoke, and other particles from air breathed in.

Detailed explanation-4: -Bacterial and viral infections cause your nose and sinuses to produce excess mucus. This extra mucus attempts to flush out the bacteria that’s causing the infection as your body fights it off. Sometimes mucus becomes yellow or green as your body attempts to trap the infection, producing pus.

Detailed explanation-5: -Boogers are pieces of drying mucus that contain trapped dirt or bacteria. These contaminants come into your nasal passages when you breathe.