Innate Immunity as a section of Immunology. Human immune recognition, defense, and immune memory. Clinical treatment and medical history remain in Medicine.
Test your knowledge with these top questions!
Which protein helps toughen the outer cells of human skin?
Keratin also forms much of hair and nails, giving these structures strength as their cells harden.
Where do glands produce human earwax?
Earwax helps trap dust before the particles reach the delicate eardrum.
Healthy human skin usually has which surface pH condition?
The acidic film, often called the acid mantle, helps inhibit some microbes on the skin.
Which property lets nasal mucus trap dust before the dust reaches the lungs?
Much of the mucus made in the nose is swallowed without us noticing, carrying trapped particles to the stomach.
Which substance makes up most of human mucus?
Water keeps mucus movable, so the airways can clear the dust and germs caught in it.
Which everyday action helps move earwax toward the ear opening?
The skin lining the ear canal also moves outward, carrying old wax and trapped debris with it.
What is the medical name for human earwax?
Earwax contains shed skin cells as well as secretions from two types of glands.
What mainly makes earwax repel water in the ear canal?
The oily coating also helps keep the ear canal's skin from drying out.
Which proteins help give human mucus its thick, gel-like consistency?
Mucins carry sugar chains that hold water, forming a moist barrier over delicate tissues.
What are the tiny beating structures that move mucus along human airways?
Cilia move mucus toward the throat, helping carry trapped particles out of the lungs.