BIOS 255N Final Exam Study Guide APIII Innate and adaptive systems, how they work and interact (Lymphatic System) • Innate (non specific)-defenses that are present at birth, 1)first line of defense are the physical and chemical barriers of the SKIN and mucous membranes, o Mechanical Defense-  Skin, mucous membranes, tears, saliva, mucus, cilia, epiglottis, urine flow, defecating, vomiting  Chemical Defense-  Sebum, lysozyme, gastric juice • 2) the second line of defense are ...

BIOS 255N -Final_Exam_Study_Guide_APIII (1)/BIOS 255N -Final_Exam_Study_Guide_APIII (1). Innate and adaptive systems, how they work and interact (Lymphatic System)