Section 6 Flashcards
Antibodies
Protein that binds to pathogens and label them for destruction
Y shaped
Released by B cells
Contribute to adaptive immunity
Leukocytes
Cells of immune system white blood cells not only present in blood,
Produce antibodies
Can distinguish between self cells and non self cells
Casual relationship
When info are matching
Intact pump- cholera
No pump - no cholera
Spurious relationship
Info are correct but they are not related
Access to compute - better life expectancy
Immune system
Complex network of specialised proteins and other natural substances that act together to protect human and destroy pathogens
Risk factors of infectious diseases
Biological
Behavioural
Socioeconomic
T cells
Cytoxic T cells realise toxic chemicals
Programmed to kill body’s own cells that got infected
Helper T cells
Send activation signals to all leukocytes involved in inflammation phagocytosis
HIV destroys helper T cells
Antigens
- Unique molecules found in structure pathogens
- able to recognise by receptors on the surface of T cells or B cells in adaptive immune system
- Recognised by leukocytes triggers immune response against only those pathogens w. That antigens
Memory cells
Long lived cells in adaptive system formed after first encounter with specific pathogens
Immunological memory
Feature of adaptive immunity
Faster stronger longer secondary response that previously were a target
Natural barriers against pathogens
Saliva Tears Sweat Stomach acid Semen Skin
Lymph nodes
Glands
Become swollen when leukocytes multiply near the side of infection
Lymphatic system
Lymph nodes Spleen Tonsils Thymus Bone marrow And fine tubes that connect them through the body
Leukocytosis
Significant increase in all types of leukocytes in blood stream
Erythrocytes
Red blood cells
