PSYC 2151 Lecture Notes - Lecture 8: Neutrophil, B Cell, Tonsillitis
13 Oct 2016
School
Department
Course
Professor
Document Summary
The immune system protects the body from foreign invaders and must distinguish between the body itself and what is foreign. Direct transmission bodily contact (e. g. , herpes, hpv) indirect contact infectious microbes are passed on to the person by airborne particles, dust, water food (aka, environmental transmission) (e. g. , the flu; sars) Biological transmission a transmitting agent (e. g. , mosquito) transforms the microbes conducive to the human body (e. g. , yellow fever) Mechanical transmission transmission of an infection by means of a carrier not directly involved in the disease process (e. g. , dirty hands, mice, flies, etc. ) Under several conditions: the number of organisms the body"s defense mechanisms are low. Virulence (the extent to which it is poisonous or damaging) to the organism. The course of infection has two phases: incubation period. Non-specific symptoms (general discomfort: acute phase. Disease and symptoms are most pronounced then there is a decline where organisms are expelled from the body by the mouth, nose, digestive tract, feces and urine.
