Barriers into the body can be
Physical
Chemical
Mechanical
Toxic
Barriers --> ... Immunity --> ... Immunity
Innate, Adaptive
Isolated, Global
Local, Total
Name three things that make the skin an effective barrier
Thick
High pH
Wet
No nutrients
Sebum makes it oily
Secretion washes away salt
Innate immunity gives an immediate response
Adaptive immunity is done through granulocytes
Innate immunity is antigen specific
Innate immunity is not enhanced by secondary exposure/has no memory
Which of the following is a physical barrier?
Skin
Stomach Acid
Tears
Which of the following is a chemical barrier?
Sebum
Mucus membranes
