L13 How to react to danger Flashcards
What are some body defences
Mucus, cilia and defensins
First Body response to danger
Pattern recognition receptors on many cells
Inflammation (pain, heat, redness, swelling)
Main components of the lymphatic system
Lymphatic vessels
Nodes
Lymph
Function of Lymphatic vessels
Lines that connect the system
Function of lymph nodes
A point in a network at which lines intersect or branch
What is lymph
A colourless liquid containing white blood cells that drains through the lymphatic system into the blood stream
Name 2 lymphoid organs
Thymus and spleen
Red blood cells function, quantity, lifespan and how many are made per second
Red blood cells transport O2 and CO2
5-6 million per ul of blood
~2 million made per second
live ~110 days
Types of innate white blood cells
Neutrophils, Basophils, Macrophages, Eosinophils, Dendritic cells and Monocytes
Types of adaptive white blood cells
T cells and B cells
Is innate or adaptive immunity faster
Innate
What is a Complement and what is its function
A cascade of proteins in serum
Activated by antibody, or molecules from pathogens
Amplifies the inflammatory resonse
Can directly kill pathogens, or attract immune cells
3 Immune cells in blood
Neutrophils, Macrophages and dendritic cells
Neutrophil Facts
Most abundant white blood cells
Active phagocytic cells
Consume and kill pathogens
Recruited by inflammation into tissues
Short lived
Macrophage Facts
Develop in tissues from precursors
Active pahgocytic cells
Consume ad kill pathogens
Activated by inflammation
Long lived
